Keystones — Lintel

Five GCSE retrieval questions · 22 June 2024 · mathsvault.uk/keystones

1. Number

Calculate: 742 + 442

Answer: 742 + 442 = 1184
2. Algebra

Solve: ^x⁄₂ = 3.5

Answer: x = 7
3. Geometry

Find c if a = 20cm and b = 19cm in a right triangle

Answer: 27.6cm
4. Ratio

Simplify: 8:6:10

Answer: 4:3:5
5. Statistics

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

Answer: ⁴⁄₁₃

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