ACMNA055

Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation

Elaborations

• recognising that certain single-digit number combinations always result in the same answer for addition and subtraction, and using this knowledge for addition and subtraction of larger numbers (Skills: Numeracy, Critical and Creative Thinking)
• combining knowledge of addition and subtraction facts and partitioning to aid computation (for example 57 + 19 = 57 + 20 - 1) (Skills: Numeracy, Critical and Creative Thinking)

(View this topic on www.australiancurriculum.edu.au )