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Year 7 Number and algebra WA7MNAA1 4 pages · 34 questions Core
Year 7 Index Notation and Powers of 10 Worksheet
Free Year 7 index notation worksheet (WA7MNAA1): expand, evaluate and compare powers, powers of 10 and challenge puzzles. With a full marking key.
What's covered
- Writing and expanding numbers in index notation
- Evaluating and comparing powers
- Using powers of 10 with place value
About this worksheet
This free Year 7 index notation worksheet is written for the Western Australian curriculum and mapped to SCSA content description WA7MNAA1. It targets one skill so students can practise until it sticks: by the end, students can say “I can write, expand, evaluate and compare numbers in index notation, including powers of 10.”
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
- Writing and expanding numbers in index notation
- Evaluating and comparing powers
- Using powers of 10 with place value
How to use this worksheet
Start with the Key idea box, then complete Section A without a calculator. 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 56, and the score box on the last page helps students see which section needs more practice.
Common mistakes to watch for
- Treating 2³ as 2 × 3
- Confusing the base and the index
- Assuming 2 to the power 5 equals 5²
- Miscounting zeros in powers of 10
Where this fits in the WA Year 7 sequence
Index Notation and Powers of 10 sits in the Algebraic techniques sub-strand of Number and algebra. It is one of a set of short, single-skill EduLift worksheets that split each Year 7 content description into sub-skills. Use the previous and next links to work through the sequence in order.
Common errors we see in tutoring
- Treating 2³ as 2 × 3
- Confusing the base and the index
- Assuming 2 to the power 5 equals 5²
- Miscounting zeros in powers of 10
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 7 tutors are for.
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