ACARA AC9M3A03, Inverse operations
Year 3 · Algebra
Recognise and explain how addition and subtraction undo each other and use this to partition numbers and find unknowns.
Below are free printable maths worksheets that support AC9M3A03. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.
Teaching guide
Recognise and explain how addition and subtraction undo each other and use this to partition numbers and find unknowns.
Show that three numbers make four related facts (two + and two -, or two × and two ÷) using a part-part-whole diagram or a triangle card.
Generated and checked in code, so it is correct.
Not seeing subtraction/division as the inverse, so children re-count instead of using the known addition/multiplication fact.
Fact Families worksheets
All fact families worksheets →Addition worksheets
All addition worksheets →Subtraction worksheets
All subtraction worksheets →Australian Curriculum content descriptions (c) ACARA, used under CC BY 4.0. Descriptions are paraphrased. See australiancurriculum.edu.au.