- Memorize: Squares 1-20 and cubes 1-10
- Estimation: Use perfect squares as anchors
- Check answers: Square your root to verify
- Brackets matter: (-x)² ≠ -x²
- Calculator: Use x² and √ buttons carefully
This exam tips covers Exam Tips within Powers & Roots for GCSE Mathematics. Revise Powers & Roots in Number for GCSE Mathematics with 15 exam-style questions and 22 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 13 of 14 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Practice questions for Powers & Roots
What is the value of 2⁻³?
Explain why x⁻¹ = 1/x
Quick recall flashcards
Powers of 10
10¹ = 10
10² = 100
10³ = 1,000
10⁴ = 10,000
10⁵ = 100,000
10⁶ = 1,000,000
Pattern: n zeros after 1
Cubes: 1³ to 5³
1³ = 1
2³ = 8
3³ = 27
4³ = 64
5³ = 125