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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 = _.
Samples: Make 10. Single digit addition (missing number). Subtract single digits with a missing number. Plus two.
Number and place value
ACMNA073 – Apply place value to partition, rearrange and regroup numbers to at least tens of thousands to assist calculations and solve problems
Samples: Place Value to 1000. Identifying place value to 10000 (includes empty columns). Expanded Notation Part 1.
Patterns and algebra
ACMNA083 – Use equivalent number sentences involving addition and subtraction to find unknown quantities
Samples: Balancing equations - addition. Continue number patterns. Continue number patterns (multiplication).
6.NA.1 – Apply additive and simple multiplicative strategies flexibly to:
6.NA.1.a – Combine or partition whole numbers, including performing mixed operations and using addition and subtraction as inverse operations
Samples: Write numbers – to 100,000. Reading numbers – to 100,000. Comparing numbers – to 100,000.
KS1.Y1.N.AS – Number - addition and subtraction
Pupils should be taught to:
KS1.Y1.N.AS.1 – Read, write and interpret mathematical statements involving addition (+), subtraction (-) and equals (=) signs
Samples: Adding dots. Add on to 10. Count on and back by 2. Subtract 2 from numbers under 10. 'Adding On' to subtract.