1.OA.1 – Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. (See Glossary, Table 1. http://www.corestandards.org/the-standards/mathematics/glossary/glossary/ )

• 9 learning outcomes – click to view

  Samples: Adding 2 (number line). Adding within 6. Adding on to 10 by counting. Adding by counting (problem solving). 

  • Adding 2 (number line)

    • Activities: 2 course, 0 extra

    • • Adding 2 (number line)
      • Challenge
    • • ONE MINUTE CHALLENGE - Add 2
      • Challenge

  • Adding within 6

    • Activities: 1 course, 1 extra

    • • Adding within 6
      • Practice

    Extra activities

    • • Adding within 5 - activity 1
      • Practice

  • Adding on to 10 by counting

    • Activities: 2 course, 3 extra

    • • Adding on to 10 by counting
      • Tutorial
    • • Adding on to 10 by counting
      • Practice

    Extra activities

    • • Adding on to 10 with visual cues.
      • Practice
    • • Add on to 10
      • Tutorial
    • • Add on to 10
      • Printable

  • Addition (problem solving)

    • Activities: 1 course, 2 extra

    • • Adding by counting (problem solving)
      • Practice

    Extra activities

    • • Adding by counting (problem solving)
      • Printable
    • • Adding by counting (problem solving)
      • Printable

  • Subtracting from 10

    • Activities: 5 course, 2 extra

    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Practice
    • • Subtracting from 10
      • Practice

    Extra activities

    • • Subtract - numbers under 10
      • Printable
    • • 
      • Subtract - numbers under 10
      • Practice

  • Adding single digit numbers

    • Activities: 5 course, 18 extra

    • • Adding single digit numbers
      • Tutorial
    • • Adding single digit numbers
      • Practice
    • • Adding single digit numbers (20 questions)
      • Practice
    • • Adding single digit numbers
      • Challenge
    • • Add numbers less than 5
      • Tutorial

    Extra activities

    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Add doubles - single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Timed Challenge: Add numbers less than 5
      • Challenge
    • • 
      • Add Single Digits Duck Game
      • Practice
    • • Drill - Add numbers up to 10.
      • Printable
    • • Drill - Doubles to 20
      • Printable
    • • 
      • Drill - Add numbers up to 10 (Auto-Generated)
      • Printable
    • • 
      • Drill - Doubles to 20 (Auto-Generated)
      • Printable
    • • Add single digit numbers
      • Printable
    • • 
      • Add single digit numbers - visual cues
      • Practice
    • • 
      • Add single digit numbers using a number line
      • Practice
    • • 
      • Addition to 20 - with visual cues
      • Practice
    • • 
      • Add numbers less than 5
      • Assessment
    • • 
      • Add single digit numbers
      • Assessment
    • • 
      • Combining to 20
      • Practice

  • Make 10.

    • Activities: 5 course, 4 extra

    • • Make 10
      • Tutorial
    • • Make 10
      • Practice
    • • Make 10
      • Practice
    • • Make 10 (20 questions)
      • Practice
    • • Make 10 - Using a number line
      • Practice

    Extra activities

    • • Make 10
      • Tutorial
    • • Make 10
      • Printable
    • • Make 10 - Visual cues
      • Practice
    • • 
      • Combination to 10
      • Practice

  • Subtraction using visual cues. - How Many Left?

    • Activities: 0 course, 2 extra

    Extra activities

    • • 
      • Subtract from 20
      • Practice
    • • 
      • Subtraction using a number line
      • Practice

  • Subtracting single digit numbers

    • Activities: 4 course, 12 extra

    • • Subtracting single digit numbers
      • Tutorial
    • • Subtracting single digit numbers
      • Practice
    • • Subtracting single digit numbers (20 questions)
      • Practice
    • • Subtracting single digit numbers
      • Challenge

    Extra activities

    • • Subtract single digit numbers
      • Printable
    • • 
      • Subtraction problem solving
      • Assessment
    • • Subtract single digit numbers
      • Printable
    • • Drill - Subtraction under 10
      • Printable
    • • 
      • Drill - Subtraction under 10 (Auto-Generated)
      • Printable
    • • Subtract single digit numbers
      • Tutorial
    • • Subtract single digits
      • Tutorial
    • • 
      • Subtract from 10
      • Practice
    • • 
      • Subtract single digit numbers
      • Assessment
    • • 
      • Subtract single digit numbers
      • Challenge
    • • 
      • Subtract single digit numbers
      • Practice
    • • 
      • Subtract numbers less than 20
      • Assessment

1.OA.2 – Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

• 2 learning outcomes – click to view

  Samples: Adding three numbers (small numbers). Adding three single digit numbers. Adding three numbers (small numbers). 

  • Adding three numbers (small numbers)

    • Activities: 3 course, 11 extra

    • • Adding three numbers (small numbers)
      • Tutorial
    • • Adding three numbers (small numbers)
      • Practice
    • • Adding three numbers (small numbers)
      • Challenge

    Extra activities

    • • Add three numbers - each under 6
      • Tutorial
    • • Adding three numbers
      • Tutorial
    • • Adding three numbers (small numbers)
      • Printable
    • • Adding three numbers (small numbers)
      • Printable
    • • Adding three numbers (small numbers)
      • Printable
    • • 
      • Drill - add three numbers up to 5 (Auto-Generated)
      • Printable
    • • Adding three numbers (small numbers)
      • Printable
    • • 
      • Drill - Add three numbers - each less than 10 (Auto-Generated)
      • Printable
    • • Adding three numbers (small numbers)
      • Printable
    • • 
      • Add three numbers - each under 6
      • Assessment
    • • 
      • Add three single digit numbers
      • Practice

  • Adding three numbers

    • Activities: 4 course, 3 extra

    • • Adding three single digit numbers
      • Tutorial
    • • Adding three single digit numbers
      • Tutorial
    • • Add three sets of numbers
      • Practice
    • • Timed Challenge: Add three numbers - each under 11
      • Challenge

    Extra activities

    • • Adding three numbers
      • Printable
    • • Add three single digit numbers
      • Printable
    • • Drill - Add three numbers - each less than 10
      • Printable

1.OA.3 – Apply properties of operations as strategies to add and subtract. (Students need not use formal terms for these properties.) Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

• 8 learning outcomes – click to view

  Samples: Adding by counting (to 10). Adding on to 10 by counting. Adding single digit numbers. 

  • Adding by counting (to 10)

    • Activities: 3 course, 3 extra

    • • Adding by counting (to 10)
      • Tutorial
    • • Adding by counting (10)
      • Practice
    • • Adding by counting (objects)
      • Practice

    Extra activities

    • • Adding by counting (printable)
      • Printable
    • • 
      • Add on to 5
      • Practice
    • • 
      • Addition of numbers less than 5
      • Practice

  • Adding on to 10 by counting

    • Activities: 2 course, 3 extra

    • • Adding on to 10 by counting
      • Tutorial
    • • Adding on to 10 by counting
      • Practice

    Extra activities

    • • Adding on to 10 with visual cues.
      • Practice
    • • Add on to 10
      • Tutorial
    • • Add on to 10
      • Printable

  • Adding single digit numbers

    • Activities: 5 course, 18 extra

    • • Adding single digit numbers
      • Tutorial
    • • Adding single digit numbers
      • Practice
    • • Adding single digit numbers (20 questions)
      • Practice
    • • Adding single digit numbers
      • Challenge
    • • Add numbers less than 5
      • Tutorial

    Extra activities

    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Add doubles - single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Timed Challenge: Add numbers less than 5
      • Challenge
    • • 
      • Add Single Digits Duck Game
      • Practice
    • • Drill - Add numbers up to 10.
      • Printable
    • • Drill - Doubles to 20
      • Printable
    • • 
      • Drill - Add numbers up to 10 (Auto-Generated)
      • Printable
    • • 
      • Drill - Doubles to 20 (Auto-Generated)
      • Printable
    • • Add single digit numbers
      • Printable
    • • 
      • Add single digit numbers - visual cues
      • Practice
    • • 
      • Add single digit numbers using a number line
      • Practice
    • • 
      • Addition to 20 - with visual cues
      • Practice
    • • 
      • Add numbers less than 5
      • Assessment
    • • 
      • Add single digit numbers
      • Assessment
    • • 
      • Combining to 20
      • Practice

  • Single digit addition (missing number)

    • Activities: 5 course, 10 extra

    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Practice
    • • Single digit addition (missing number)
      • Challenge

    Extra activities

    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single Digit Addition with a Missing Number
      • Tutorial
    • • 
      • Drill - Single digit addition with a missing number (Auto-Generated)
      • Printable
    • • 
      • Addition with a missing number
      • Assessment
    • • Single digit addition with a missing number
      • Tutorial

  • Subtracting from 10

    • Activities: 5 course, 2 extra

    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Practice
    • • Subtracting from 10
      • Practice

    Extra activities

    • • Subtract - numbers under 10
      • Printable
    • • 
      • Subtract - numbers under 10
      • Practice

  • Subtracting single digit numbers (pictures)

    • Activities: 4 course, 0 extra

    • • Subtracting single digit numbers
      • Tutorial
    • • Subtracting single digit numbers (pictures)
      • Practice
    • • Subtracting single digit numbers (pictures)
      • Practice
    • • Subtracting single digit numbers (using counters)
      • Practice

  • Subtracting single digit numbers

    • Activities: 4 course, 12 extra

    • • Subtracting single digit numbers
      • Tutorial
    • • Subtracting single digit numbers
      • Practice
    • • Subtracting single digit numbers (20 questions)
      • Practice
    • • Subtracting single digit numbers
      • Challenge

    Extra activities

    • • Subtract single digit numbers
      • Printable
    • • 
      • Subtraction problem solving
      • Assessment
    • • Subtract single digit numbers
      • Printable
    • • Drill - Subtraction under 10
      • Printable
    • • 
      • Drill - Subtraction under 10 (Auto-Generated)
      • Printable
    • • Subtract single digit numbers
      • Tutorial
    • • Subtract single digits
      • Tutorial
    • • 
      • Subtract from 10
      • Practice
    • • 
      • Subtract single digit numbers
      • Assessment
    • • 
      • Subtract single digit numbers
      • Challenge
    • • 
      • Subtract single digit numbers
      • Practice
    • • 
      • Subtract numbers less than 20
      • Assessment

  • Single digit subtraction (missing number)

    • Activities: 3 course, 7 extra

    • • Single digit subtraction (missing number)
      • Tutorial
    • • Single digit subtraction (missing number)
      • Practice
    • • Single digit subtraction (missing number)
      • Challenge

    Extra activities

    • • Subtract single digits with a missing number
      • Tutorial
    • • Single digit subtraction (missing number)
      • Printable
    • • Subtraction with a missing number - numbers under 20
      • Printable
    • • 
      • Drill - Subtraction with a missing number (Auto-Generated)
      • Printable
    • • Drill - Subtraction with a missing number
      • Printable
    • • Subtract single digits with a missing number
      • Printable
    • • 
      • Subtraction with a missing number - numbers under 20
      • Assessment

1.OA.4 – Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8. Add and subtract within 20.

• 4 learning outcomes – click to view

  Samples: Make 10. Make 10 (problem solving). Single digit addition (missing number). 'Adding on' to subtract. Make 10. 

  • Make 10.

    • Activities: 5 course, 4 extra

    • • Make 10
      • Tutorial
    • • Make 10
      • Practice
    • • Make 10
      • Practice
    • • Make 10 (20 questions)
      • Practice
    • • Make 10 - Using a number line
      • Practice

    Extra activities

    • • Make 10
      • Tutorial
    • • Make 10
      • Printable
    • • Make 10 - Visual cues
      • Practice
    • • 
      • Combination to 10
      • Practice

  • Make 10 (problem solving)

    • Activities: 2 course, 2 extra

    • • Make 10 (problem solving)
      • Practice
    • • Make 10 (problem solving)
      • Practice

    Extra activities

    • • Make 10 (problem solving)
      • Printable
    • • Make 10 (problem solving) Answer sheet
      • Printable

  • Single digit addition (missing number)

    • Activities: 5 course, 10 extra

    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Practice
    • • Single digit addition (missing number)
      • Challenge

    Extra activities

    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single Digit Addition with a Missing Number
      • Tutorial
    • • 
      • Drill - Single digit addition with a missing number (Auto-Generated)
      • Printable
    • • 
      • Addition with a missing number
      • Assessment
    • • Single digit addition with a missing number
      • Tutorial

  • 'Adding on' to subtract

    • Activities: 1 course, 0 extra

    • • 'Adding on' to subtract
      • Practice

1.OA.5 – Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

• 6 learning outcomes – click to view

  Samples: One and two more than. One and two less than. Two more than. Two less than. Subtract 1 from numbers under 10. 

  • One more than

    • Activities: 5 course, 3 extra

    • • One and two more than
      • Tutorial
    • • One more than
      • Practice
    • • Number Line - one more than
      • Practice
    • • One More Than
      • Tutorial
    • • Kevin Captivate Test
      • Practice

    Extra activities

    • • TEST
      • Practice
    • • ONE MINUTE CHALLENGE - Adding 1
      • Challenge
    • • 
      • Next number - numbers up to 20
      • Assessment

  • One Less Than

    • Activities: 3 course, 1 extra

    • • One and two less than
      • Tutorial
    • • One less
      • Practice
    • • One Less Than
      • Tutorial

    Extra activities

    • • 
      • One more and one less than a number - up to 30
      • Practice

  • Two more than

    • Activities: 3 course, 5 extra

    • • Two more than
      • Tutorial
    • • Two more than
      • Practice
    • • Number Line - two more than
      • Practice

    Extra activities

    • • Two more than
      • Printable
    • • Count on 2 - numbers up to 10
      • Tutorial
    • • Count on 2 - numbers up to 10
      • Tutorial
    • • 
      • Count on 2 - numbers up to 20
      • Assessment
    • • Count on 2 - numbers up to 10
      • Tutorial

  • Two Less Than

    • Activities: 2 course, 3 extra

    • • Two less than
      • Practice
    • • Count on and back by 2
      • Tutorial

    Extra activities

    • • Subtract 2 from numbers under 10
      • Printable
    • • 
      • Numbers
      • Assessment
    • • Count on and back by 2 - numbers up to 30
      • Tutorial

  • Take away 1 (numbers under 10)

    • Activities: 2 course, 0 extra

    • • Subtract 1 from numbers under 10
      • Tutorial
    • • Subtract 1 from numbers under 10
      • Practice

  • Subtracting 2

    • Activities: 2 course, 0 extra

    • • Subtracting 2
      • Tutorial
    • • Subtracting 2
      • Practice

1.OA.6 – Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

• 5 learning outcomes – click to view

  Samples: Adding single digit numbers. Subtracting single digit numbers. Adding single digit numbers (problem solving). 

  • Adding single digit numbers

    • Activities: 5 course, 18 extra

    • • Adding single digit numbers
      • Tutorial
    • • Adding single digit numbers
      • Practice
    • • Adding single digit numbers (20 questions)
      • Practice
    • • Adding single digit numbers
      • Challenge
    • • Add numbers less than 5
      • Tutorial

    Extra activities

    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Add doubles - single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Timed Challenge: Add numbers less than 5
      • Challenge
    • • 
      • Add Single Digits Duck Game
      • Practice
    • • Drill - Add numbers up to 10.
      • Printable
    • • Drill - Doubles to 20
      • Printable
    • • 
      • Drill - Add numbers up to 10 (Auto-Generated)
      • Printable
    • • 
      • Drill - Doubles to 20 (Auto-Generated)
      • Printable
    • • Add single digit numbers
      • Printable
    • • 
      • Add single digit numbers - visual cues
      • Practice
    • • 
      • Add single digit numbers using a number line
      • Practice
    • • 
      • Addition to 20 - with visual cues
      • Practice
    • • 
      • Add numbers less than 5
      • Assessment
    • • 
      • Add single digit numbers
      • Assessment
    • • 
      • Combining to 20
      • Practice

  • Subtracting single digit numbers

    • Activities: 4 course, 12 extra

    • • Subtracting single digit numbers
      • Tutorial
    • • Subtracting single digit numbers
      • Practice
    • • Subtracting single digit numbers (20 questions)
      • Practice
    • • Subtracting single digit numbers
      • Challenge

    Extra activities

    • • Subtract single digit numbers
      • Printable
    • • 
      • Subtraction problem solving
      • Assessment
    • • Subtract single digit numbers
      • Printable
    • • Drill - Subtraction under 10
      • Printable
    • • 
      • Drill - Subtraction under 10 (Auto-Generated)
      • Printable
    • • Subtract single digit numbers
      • Tutorial
    • • Subtract single digits
      • Tutorial
    • • 
      • Subtract from 10
      • Practice
    • • 
      • Subtract single digit numbers
      • Assessment
    • • 
      • Subtract single digit numbers
      • Challenge
    • • 
      • Subtract single digit numbers
      • Practice
    • • 
      • Subtract numbers less than 20
      • Assessment

  • Adding single digit numbers (problem solving)

    • Activities: 2 course, 8 extra

    • • Adding single digit numbers (problem solving)
      • Practice
    • • Adding single digit numbers (problem solving)
      • Practice

    Extra activities

    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers (problem solving) Answer sheet
      • Printable
    • • Adding single digit numbers (problem solving)
      • Printable
    • • 
      • Addition problem solving
      • Assessment

  • Make 10 (problem solving)

    • Activities: 2 course, 2 extra

    • • Make 10 (problem solving)
      • Practice
    • • Make 10 (problem solving)
      • Practice

    Extra activities

    • • Make 10 (problem solving)
      • Printable
    • • Make 10 (problem solving) Answer sheet
      • Printable

  • Subtracting single digits from up to 20 (problem solving)

    • Activities: 2 course, 7 extra

    • • Subtracting a single digit (problem solving)
      • Practice
    • • Single digit subtraction
      • Practice

    Extra activities

    • • Subtracting a single digit (problem solving)
      • Printable
    • • Subtracting single digit numbers from numbers (problem solving)
      • Printable
    • • Subtracting single digits (problem solving)
      • Printable
    • • Single digit subtraction
      • Printable
    • • Single digit subtraction Answer sheet
      • Printable
    • • 
      • Addition and subtraction problem solving
      • Assessment
    • • 
      • Subtraction problem solving
      • Assessment

1.OA.7 – Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.

• 1 learning outcomes – click to view

  Samples: Adding single digit numbers. Adding single digits (matching answers). Adding single digits (matching answers). 

  • Adding single digits (matching answers)

    • Activities: 3 course, 1 extra

    • • Adding single digit numbers
      • Tutorial
    • • Adding single digits (matching answers)
      • Practice
    • • Adding single digits (matching answers)
      • Practice

    Extra activities

    • • Single digit addition
      • Practice

1.OA.8 – Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ – 3, 6 + 6 = _.

• 12 learning outcomes – click to view

  Samples: Make 10. Single digit addition (missing number). Single digit subtraction (missing number). Adding 2 (number line). 

  • Make 10.

    • Activities: 5 course, 4 extra

    • • Make 10
      • Tutorial
    • • Make 10
      • Practice
    • • Make 10
      • Practice
    • • Make 10 (20 questions)
      • Practice
    • • Make 10 - Using a number line
      • Practice

    Extra activities

    • • Make 10
      • Tutorial
    • • Make 10
      • Printable
    • • Make 10 - Visual cues
      • Practice
    • • 
      • Combination to 10
      • Practice

  • Single digit addition (missing number)

    • Activities: 5 course, 10 extra

    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Tutorial
    • • Single digit addition (missing number)
      • Practice
    • • Single digit addition (missing number)
      • Challenge

    Extra activities

    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single digit addition (missing number)
      • Printable
    • • Single Digit Addition with a Missing Number
      • Tutorial
    • • 
      • Drill - Single digit addition with a missing number (Auto-Generated)
      • Printable
    • • 
      • Addition with a missing number
      • Assessment
    • • Single digit addition with a missing number
      • Tutorial

  • Single digit subtraction (missing number)

    • Activities: 3 course, 7 extra

    • • Single digit subtraction (missing number)
      • Tutorial
    • • Single digit subtraction (missing number)
      • Practice
    • • Single digit subtraction (missing number)
      • Challenge

    Extra activities

    • • Subtract single digits with a missing number
      • Tutorial
    • • Single digit subtraction (missing number)
      • Printable
    • • Subtraction with a missing number - numbers under 20
      • Printable
    • • 
      • Drill - Subtraction with a missing number (Auto-Generated)
      • Printable
    • • Drill - Subtraction with a missing number
      • Printable
    • • Subtract single digits with a missing number
      • Printable
    • • 
      • Subtraction with a missing number - numbers under 20
      • Assessment

  • Adding 2 (number line)

    • Activities: 2 course, 0 extra

    • • Adding 2 (number line)
      • Challenge
    • • ONE MINUTE CHALLENGE - Add 2
      • Challenge

  • Adding within 6

    • Activities: 1 course, 1 extra

    • • Adding within 6
      • Practice

    Extra activities

    • • Adding within 5 - activity 1
      • Practice

  • Adding on to 10 by counting

    • Activities: 2 course, 3 extra

    • • Adding on to 10 by counting
      • Tutorial
    • • Adding on to 10 by counting
      • Practice

    Extra activities

    • • Adding on to 10 with visual cues.
      • Practice
    • • Add on to 10
      • Tutorial
    • • Add on to 10
      • Printable

  • Adding by counting

    • Activities: 1 course, 1 extra

    • • Adding ones
      • Practice

    Extra activities

    • • 
      • Timed Number Challenge: Addition of numbers less than 5
      • Challenge

  • Adding single digit numbers

    • Activities: 5 course, 18 extra

    • • Adding single digit numbers
      • Tutorial
    • • Adding single digit numbers
      • Practice
    • • Adding single digit numbers (20 questions)
      • Practice
    • • Adding single digit numbers
      • Challenge
    • • Add numbers less than 5
      • Tutorial

    Extra activities

    • • Adding single digit numbers (problem solving)
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Add doubles - single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Adding single digit numbers
      • Printable
    • • Timed Challenge: Add numbers less than 5
      • Challenge
    • • 
      • Add Single Digits Duck Game
      • Practice
    • • Drill - Add numbers up to 10.
      • Printable
    • • Drill - Doubles to 20
      • Printable
    • • 
      • Drill - Add numbers up to 10 (Auto-Generated)
      • Printable
    • • 
      • Drill - Doubles to 20 (Auto-Generated)
      • Printable
    • • Add single digit numbers
      • Printable
    • • 
      • Add single digit numbers - visual cues
      • Practice
    • • 
      • Add single digit numbers using a number line
      • Practice
    • • 
      • Addition to 20 - with visual cues
      • Practice
    • • 
      • Add numbers less than 5
      • Assessment
    • • 
      • Add single digit numbers
      • Assessment
    • • 
      • Combining to 20
      • Practice

  • Subtracting from 10

    • Activities: 5 course, 2 extra

    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Tutorial
    • • Subtracting from 10
      • Practice
    • • Subtracting from 10
      • Practice

    Extra activities

    • • Subtract - numbers under 10
      • Printable
    • • 
      • Subtract - numbers under 10
      • Practice

  • Subtracting single digit numbers (pictures)

    • Activities: 4 course, 0 extra

    • • Subtracting single digit numbers
      • Tutorial
    • • Subtracting single digit numbers (pictures)
      • Practice
    • • Subtracting single digit numbers (pictures)
      • Practice
    • • Subtracting single digit numbers (using counters)
      • Practice

  • Subtracting single digit numbers

    • Activities: 4 course, 12 extra

    • • Subtracting single digit numbers
      • Tutorial
    • • Subtracting single digit numbers
      • Practice
    • • Subtracting single digit numbers (20 questions)
      • Practice
    • • Subtracting single digit numbers
      • Challenge

    Extra activities

    • • Subtract single digit numbers
      • Printable
    • • 
      • Subtraction problem solving
      • Assessment
    • • Subtract single digit numbers
      • Printable
    • • Drill - Subtraction under 10
      • Printable
    • • 
      • Drill - Subtraction under 10 (Auto-Generated)
      • Printable
    • • Subtract single digit numbers
      • Tutorial
    • • Subtract single digits
      • Tutorial
    • • 
      • Subtract from 10
      • Practice
    • • 
      • Subtract single digit numbers
      • Assessment
    • • 
      • Subtract single digit numbers
      • Challenge
    • • 
      • Subtract single digit numbers
      • Practice
    • • 
      • Subtract numbers less than 20
      • Assessment

  • Balancing equations - Equivalent number sentences

    • Activities: 2 course, 0 extra

    • • Balancing equations - addition
      • Practice
    • • Balancing equations - subtraction
      • Practice

1.NBT.1 – Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

• 3 learning outcomes – click to view

  Samples: Write numbers to 100. Counting to 100. Counting to 100 (number line 30-50). Missing numbers. 

  • Write numbers to 100

    • Activities: 1 course, 0 extra

    • • Write numbers to 100
      • Practice

  • Hundreds chart 1-30

    • Activities: 4 course, 2 extra

    • • Counting to 100
      • Tutorial
    • • Missing numbers
      • Tutorial
    • • Hundreds chart 1-30
      • Practice
    • • Hundred's Chart Count
      • Tutorial

    Extra activities

    • • Hundred's Chart
      • Printable
    • • 
      • Number Chart 1 - 100
      • Whiteboard

  • Counting to 100 on a number line

    • Activities: 3 course, 2 extra

    • • Counting to 100 (number line 30-50)
      • Practice
    • • Counting to 100 (number line 50-70)
      • Practice
    • • Counting to 100 (number line 70-100)
      • Practice

    Extra activities

    • • Numbers Problem Solving
      • Printable
    • • 
      • Count to 100
      • Practice

1.NBT.2 – Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

• 1.NBT.2.a – 10 can be thought of as a bundle of ten ones — called a “ten.”

  • 5 learning outcomes – click to view

    Samples: Place Value Teens Mab using blocks to count. Counting to 20 using cubes. Counting to 30 using cubes. Place Values. 

    • Place value (11-20)

      • Activities: 2 course, 0 extra

      • • Place Value Teens Mab using blocks to count
        • Tutorial
      • • Place Value Teens Mab using sticks to count
        • Tutorial

    • Counting to 20 using cubes

      • Activities: 1 course, 0 extra

      • • Counting to 20 using cubes
        • Practice

    • Counting to 30 using cubes

      • Activities: 1 course, 0 extra

      • • Counting to 30 using cubes
        • Practice

    • Numbers represented using MAB (up to 100)

      • Activities: 3 course, 2 extra

      • • Place Values
        • Tutorial
      • • Place Values
        • Tutorial
      • • Numbers represented using MAB (up to 100)
        • Practice

      Extra activities

      • • 
        • Identifying Place Value
        • Practice
      • • 
        • Guessing game - Numbers to 100
        • Practice

    • Write numbers to 100

      • Activities: 1 course, 0 extra

      • • Write numbers to 100
        • Practice

• 1.NBT.2.b – The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.

  • 2 learning outcomes – click to view

    Samples: Place Value Teens Mab using blocks to count. Counting to 20 using cubes. 

    • Place value (11-20)

      • Activities: 2 course, 0 extra

      • • Place Value Teens Mab using blocks to count
        • Tutorial
      • • Place Value Teens Mab using sticks to count
        • Tutorial

    • Counting to 20 using cubes

      • Activities: 1 course, 0 extra

      • • Counting to 20 using cubes
        • Practice

• 1.NBT.2.c – The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

  • 1 learning outcomes – click to view

    Samples: Counting on number line (by 10's). Counting by 10. Counting by 10. Counting by 10. Counting by 10. Counting by 10. 

    • Counting on number line (by 10's)

      • Activities: 6 course, 5 extra

      • • Counting on number line (by 10's)
        • Tutorial
      • • Counting by 10
        • Practice
      • • Counting by 10
        • Practice
      • • Counting by 10
        • Practice
      • • Counting by 10
        • Tutorial
      • • Counting by 10
        • Tutorial

      Extra activities

      • • Counting by 10
        • Printable
      • • Counting by 10
        • Printable
      • • 
        • Numbers Problem Solving
        • Assessment
      • • 
        • Count by lots of 10
        • Practice
      • • 
        • Counting by 10
        • Assessment

1.NBT.3 – Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.

1.NBT.4 – Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

• 8 learning outcomes – click to view

  Samples: Adding on single digit numbers using blocks. Adding on 10 using blocks. Adding multiples of 10 using blocks. 

  • Adding on single digit numbers using blocks

    • Activities: 1 course, 0 extra

    • • Adding on single digit numbers using blocks
      • Practice

  • Adding on 10 using blocks

    • Activities: 2 course, 0 extra

    • • Adding on 10 using blocks
      • Tutorial
    • • Adding on 10 using blocks
      • Practice

  • Adding multiples of 10 using blocks

    • Activities: 2 course, 0 extra

    • • Adding multiples of 10 using blocks
      • Tutorial
    • • Adding multiples of 10 using blocks
      • Practice

  • Adding two digit numbers using blocks

    • Activities: 1 course, 0 extra

    • • Adding two digit numbers using blocks
      • Practice

  • Explain addition and subtraction by drawing

    • Activities: 1 course, 0 extra

    • • Explain addition and subtraction by drawing
      • Practice

  • Adding multiples of 10

    • Activities: 3 course, 4 extra

    • • Adding multiples of 10
      • Tutorial
    • • Adding multiples of 10.
      • Practice
    • • Adding multiples of 10
      • Tutorial

    Extra activities

    • • Adding multiples of 10
      • Printable
    • • Adding multiples of 10
      • Tutorial
    • • 
      • Addition problem solving
      • Assessment
    • • 
      • Adding lots of 10
      • Practice

  • Adding on (numbers under 10)

    • Activities: 3 course, 14 extra

    • • Adding on (numbers under 10)
      • Tutorial
    • • Adding on (numbers under 10)
      • Practice
    • • Adding on (numbers under 10)
      • Challenge

    Extra activities

    • • Adding on (numbers under 10)
      • Printable
    • • Adding on numbers under 10 (problem solving)
      • Printable
    • • Adding on (numbers under 10)
      • Printable
    • • Add on numbers under 10
      • Tutorial
    • • Adding lots of 100 to numbers less than 1,000
      • Tutorial
    • • 
      • Adding lots of 100 to numbers less than 1,000
      • Assessment
    • • 
      • Add on numbers less than 10
      • Assessment
    • • 
      • Add numbers less than 10 to numbers less than 50
      • Challenge
    • • 
      • Adding lots of 10 to numbers less than 1,000
      • Challenge
    • • 
      • Add lots of 10 - Jump Strategy
      • Practice
    • • 
      • Adding lots of 10 to numbers less than 200
      • Assessment
    • • 
      • Adding lots of 10 to numbers less than 200
      • Challenge
    • • 
      • Adding lots of 10 to numbers less than 1,000
      • Assessment
    • • 
      • Adding lots of 100 to numbers less than 1,000
      • Challenge

  • Adding multiples of 10

    • Activities: 2 course, 4 extra

    • • Adding multiples of 10
      • Practice
    • • Adding multiples of 10
      • Challenge

    Extra activities

    • • Adding multiples of 10
      • Printable
    • • Jump strategy for addition
      • Practice
    • • Adding multiples of 10 to numbers less than 1,000
      • Printable
    • • Adding multiples of 10 to numbers less than 200
      • Printable

1.NBT.5 – Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

• 6 learning outcomes – click to view

  Samples: Adding 10. Subtracting 10 using blocks. Subtracting 10. Counting on number line (by 10's). Number of tens. Groups of 10. 

  • Adding 10 (to two digits)

    • Activities: 4 course, 14 extra

    • • Adding 10
      • Tutorial
    • • Adding 10 (to two digits)
      • Practice
    • • Adding 10 (to two digits)
      • Challenge
    • • Counting Forwards By 10
      • Tutorial

    Extra activities

    • • Adding 10 (numbers up to 20)
      • Printable
    • • Adding 10 (numbers up to 100)
      • Printable
    • • Counting forwards and backwards by 10
      • Tutorial
    • • Drill - add on 10 to numbers up to 20
      • Printable
    • • Drill Add On 10 to numbers Less 100
      • Printable
    • • Add on 10 to numbers less than 20 - Jump Strategy
      • Printable
    • • 
      • Drill - add on 10 to numbers up to 20 (Auto-Generated)
      • Printable
    • • 
      • Add on 10 to numbers less than 100 - Jump Strategy
      • Printable
    • • 
      • Drill Add On 10 to numbers Less 100 (Auto-Generated)
      • Printable
    • • 
      • Add on 10 to numbers less than 20 - Jump Strategy
      • Assessment
    • • 
      • Add on 10 - Jump Strategy
      • Practice
    • • 
      • Add on 10 to numbers less than 100 - Jump Strategy
      • Practice
    • • 
      • Add on 10 to numbers less than 100 - Jump Strategy
      • Challenge
    • • 
      • Add on 10 to numbers less than 100 - Jump Strategy
      • Assessment

  • Subtracting 10 using blocks

    • Activities: 1 course, 0 extra

    • • Subtracting 10 using blocks
      • Practice

  • Subtracting 10

    • Activities: 5 course, 11 extra

    • • Subtracting 10
      • Tutorial
    • • Subtract 10
      • Practice
    • • Subtracting 10
      • Tutorial
    • • Subtracting 10
      • Challenge
    • • Subtracting 10
      • Practice

    Extra activities

    • • Subtracting 10
      • Printable
    • • Subtracting 10 (problem solving)
      • Printable
    • • Subtract 10 from numbers under 100
      • Printable
    • • Drill - Subtract 10 from numbers under 50
      • Printable
    • • Subtract 10 from larger numbers
      • Printable
    • • Subtract 10 from numbers
      • Printable
    • • 
      • Subtract 10 from larger numbers
      • Assessment
    • • 
      • Mental strategies - subtract multiples of 10 from numbers up to 200
      • Challenge
    • • 
      • Subtract 10 from larger numbers
      • Challenge
    • • 
      • Subtract 10 from numbers
      • Assessment
    • • 
      • Mental strategies - subtract multiples of 10 from numbers up to 200
      • Assessment

  • Counting on number line (by 10's)

    • Activities: 6 course, 5 extra

    • • Counting on number line (by 10's)
      • Tutorial
    • • Counting by 10
      • Practice
    • • Counting by 10
      • Practice
    • • Counting by 10
      • Practice
    • • Counting by 10
      • Tutorial
    • • Counting by 10
      • Tutorial

    Extra activities

    • • Counting by 10
      • Printable
    • • Counting by 10
      • Printable
    • • 
      • Numbers Problem Solving
      • Assessment
    • • 
      • Count by lots of 10
      • Practice
    • • 
      • Counting by 10
      • Assessment

  • Number of tens

    • Activities: 1 course, 0 extra

    • • Number of tens
      • Practice

  • Number patterns and groups (of 10)

    • Activities: 5 course, 5 extra

    • • Groups of 10
      • Tutorial
    • • Rows of 10
      • Practice
    • • Groups of 10
      • Practice
    • • Groups of 10
      • Tutorial
    • • Rows Of 10
      • Tutorial

    Extra activities

    • • Groups of 10
      • Printable
    • • Groups of 10
      • Printable
    • • 
      • Groups of 10
      • Challenge
    • • 
      • Rows of ten
      • Practice
    • • 
      • Groups of 10
      • Assessment

1.NBT.6 – Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.

• 5 learning outcomes – click to view

  Samples: Subtracting multiples of 10 using blocks. Counting on number line (by 10's). Number of tens. Groups of 10. 

  • Subtracting multiples of 10 using blocks

    • Activities: 1 course, 0 extra

    • • Subtracting multiples of 10 using blocks
      • Practice

  • Counting on number line (by 10's)

    • Activities: 6 course, 5 extra

    • • Counting on number line (by 10's)
      • Tutorial
    • • Counting by 10
      • Practice
    • • Counting by 10
      • Practice
    • • Counting by 10
      • Practice
    • • Counting by 10
      • Tutorial
    • • Counting by 10
      • Tutorial

    Extra activities

    • • Counting by 10
      • Printable
    • • Counting by 10
      • Printable
    • • 
      • Numbers Problem Solving
      • Assessment
    • • 
      • Count by lots of 10
      • Practice
    • • 
      • Counting by 10
      • Assessment

  • Number of tens

    • Activities: 1 course, 0 extra

    • • Number of tens
      • Practice

  • Number patterns and groups (of 10)

    • Activities: 5 course, 5 extra

    • • Groups of 10
      • Tutorial
    • • Rows of 10
      • Practice
    • • Groups of 10
      • Practice
    • • Groups of 10
      • Tutorial
    • • Rows Of 10
      • Tutorial

    Extra activities

    • • Groups of 10
      • Printable
    • • Groups of 10
      • Printable
    • • 
      • Groups of 10
      • Challenge
    • • 
      • Rows of ten
      • Practice
    • • 
      • Groups of 10
      • Assessment

  • 10x tables (problem solving)

    • Activities: 2 course, 6 extra

    • • 10x tables (problem solving)
      • Practice
    • • 10x tables (problem solving)
      • Practice

    Extra activities

    • • 10x tables (problem solving)
      • Printable
    • • 10x tables (problem solving)
      • Printable
    • • 10x tables (problem solving)
      • Printable
    • • 10x tables (problem solving)
      • Printable
    • • 10x tables (problem solving)
      • Printable
    • • 10x tables (problem solving) answer sheet
      • Printable