Keystones — Lintel

Five GCSE retrieval questions · 8 January 2023 · mathsvault.uk/keystones

1. Number

Simplify: x⁴ × x⁶

Answer: x¹⁰
2. Algebra

Solve: 2x = 16

Answer: x = 8
3. Geometry

Find c if a = 9cm and b = 24cm in a right triangle

Answer: 25.6cm
4. Ratio

Calculate 32% of 507

Answer: 162.24
5. Statistics

A spinner has 4 red, 6 blue and 5 green sections. Probability of landing on red?

Answer: ⁴⁄₁₅

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