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ACARA AC9M5A02, Unknowns with brackets

Year 5 · Algebra

Find unknown values in equations involving brackets and combinations of operations using the properties of numbers.

Below are free printable maths worksheets that support AC9M5A02. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.

Teach this code

Deliver a whole lesson on AC9M5A02 from a textbook-grade teaching unit, with a hook, worked examples, diagrams, misconceptions, and an exit ticket.

Teaching guide

What students learn

Find unknown values in equations involving brackets and combinations of operations using the properties of numbers.

How to teach it

Teach the agreed order (brackets, then × and ÷ left to right, then + and - left to right) and why it removes ambiguity, with worked contrasts.

Worked example
(7 + 9) × 8 =
Answer: 128
Why: ( ) first: 7+9=16, then 16×8=128

Generated and checked in code, so it is correct.

Watch out for

Working strictly left to right and doing addition before multiplication.

Order of Operations worksheets

All order of operations worksheets →

Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.

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Australian Curriculum content descriptions (c) ACARA, used under CC BY 4.0. Descriptions are paraphrased. See australiancurriculum.edu.au.