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Mathematics
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.
Samples: Place value - 'Adding On' single digit numbers. Adding On 10 - Blocks as visual cues.
Mathematics
2.OA.1 – Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using 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/ )
Samples: Adding multiples of 10. Split Strategy. Add On Numbers Under10. Jump Strategy.
Mathematics
2.NBT.5 – Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Samples: Place value - 'Adding On' single digit numbers. Place value - Two digit addition without trading.
Number and place value
ACMNA055 – Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation
Samples: Adding three numbers. Add three numbers - each under 6. Adding three single digit numbers.
3.NA.3 – Continue spatial patterns and number patterns based on simple addition or subtraction.
Samples: Add single digit numbers. Addition to 20. Single digit addition: Activity 1. Counting Forwards By 10. Make 10. Make 10.
3.NA.1 – Apply basic addition facts and knowledge of place value and symmetry to:
3.NA.1.a – Combine or partition whole numbers
Samples: Write numbers – to 1000. Reading numbers – to 1000. Comparing numbers – to 1000. Ordinal numbers.
4.NA.3 – Create and continue spatial patterns and number patterns based on repeated addition or subtraction.
Samples: Add single digit numbers. Addition to 20. Counting Forwards By 10. Make 10. Single digit addition (missing number).
4.NA.1 – Apply basic addition and subtraction facts, simple multiplication facts, and knowledge of place value and symmetry to:
4.NA.1.a – Combine or partition whole numbers
Samples: Ordinal numbers. Odd or Even amounts. Even numbers to 20 - equations. Place Values. Place value 100.
5.NA.3 – Describe spatial and number patterns, using rules that involve spatial features, repeated addition or subtraction, and simple multiplication.
Samples: Single Digit Addition Match. Place value - 'Adding On' single digit numbers.
5.NA.1 – Apply additive and simple multiplicative strategies and knowledge of symmetry to:
5.NA.1.a – Combine or partition whole numbers
Samples: Reading numbers – to 10,000. Write numbers – to 10,000. Comparing numbers – to 10,000.
KS1.Y2.N.AS – Number - addition and subtraction
Pupils should be taught to:
KS1.Y2.N.AS.3 – Add and subtract numbers using concrete objects, pictorial representations, and mentally, including:
KS1.Y2.N.AS.3.a: a two-digit number and 1s
Samples: Place value - 'Adding On' single digit numbers. Subtract single digits with a missing number.
KS1.Y2.N.AS.3.c: 2 two-digit numbers
Samples: Place value - Two digit addition without trading. Add On Numbers Under10. Mental Strategies In Addition.
