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Year 8 Number and algebra WA8MNAUN4 5 pages · 34 questions Core
Year 8 Order of Operations and Mental Strategies with Integers Worksheet
Free Year 8 order of operations worksheet (WA8MNAUN4): integers, brackets, powers, the distributive law and inverse checks. With marking key.
What's covered
- Using order of operations with negative integers and powers
- Applying the distributive law for mental calculation
- Checking answers with inverse operations
About this worksheet
This free Year 8 order of operations with integers worksheet is written for the Western Australian curriculum and mapped to SCSA content description WA8MNAUN4. It targets one skill so students can practise until it sticks: by the end, students can say “I can use order of operations, the number laws and inverse operations to calculate and check with integers.”
What’s inside
- Key idea box – a short explanation with worked examples to read before starting.
- A · Fluency (16 questions) – quick practice to build accuracy.
- B · Core (10 questions) – worded problems set in everyday Australian contexts.
- C · Reasoning (4 questions) – explain, justify and spot the error.
- D · Challenge (4 questions) – harder multi-step and problem-solving questions for students ready to stretch.
- Separate marking key – every answer with working, plus mark allocations and marking criteria for reasoning questions.
Skills covered
- Using order of operations with negative integers and powers
- Applying the distributive law for mental calculation
- Checking answers with inverse operations
How to use this worksheet
Start with the Key idea box, then complete Section A (use a calculator only where a question says so). Most students should attempt Sections B and C; Section D suits students aiming for the top of the class or preparing for accelerated or extension maths. The worksheet is marked out of 58, and the score box on the last page helps students see which section needs more practice.
Common mistakes to watch for
- Working strictly left to right instead of multiplying first
- Treating −3² as 9
- Mishandling subtracting a negative
- Distributing a negative to only the first term
Where this fits in the WA Year 8 sequence
Order of Operations and Mental Strategies with Integers sits in the Understanding number sub-strand of Number and algebra. It is one of a set of short, single-skill EduLift worksheets that split each Year 8 content description into sub-skills. Use the previous and next links to work through the sequence in order.
Common errors we see in tutoring
- Working strictly left to right instead of multiplying first
- Treating −3² as 9
- Mishandling subtracting a negative
- Distributing a negative to only the first term
Answer key (with worked solutions)
The answer key is a separate PDF with every question worked, not just the final answers.
Download the answer key (PDF)Stuck on a section? That's what our Year 8 tutors are for.
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