ACARA AC9M4A01, Unknowns in addition and subtraction
Year 4 · Algebra
Find unknown values in addition and subtraction equations using the properties of numbers and operations.
Below are free printable maths worksheets that support AC9M4A01. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.
Teaching guide
Find unknown values in addition and subtraction equations using the properties of numbers and operations.
Start by counting on from the larger number, then move to partitioning into tens and ones and adding each part, and finally column addition with regrouping.
Generated and checked in code, so it is correct.
Adding the tens and ones columns without carrying the regrouped ten, and always counting on from the first number rather than the larger.
Addition worksheets
All addition worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.
Subtraction worksheets
All subtraction worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.
Fact Families worksheets
All fact families worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.
Australian Curriculum content descriptions (c) ACARA, used under CC BY 4.0. Descriptions are paraphrased. See australiancurriculum.edu.au.