ACARA AC9M4A01, Extend addition facts
Year 4 · Algebra
Extend addition and subtraction facts to twenty into efficient mental strategies for larger numbers, without a calculator.
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
Extend addition and subtraction facts to twenty into efficient mental strategies for larger numbers, without a calculator.
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 →Subtraction worksheets
All subtraction worksheets →Australian Curriculum content descriptions (c) ACARA, used under CC BY 4.0. Descriptions are paraphrased. See australiancurriculum.edu.au.