Keystones — Lintel

Five GCSE retrieval questions · 5 December 2023 · mathsvault.uk/keystones

1. Number

Calculate: 997 + 781

Answer: 1778
2. Algebra

Solve: ^x⁄₄ = 9

Answer: x = 36
3. Geometry

Adjacent = 16cm, hypotenuse = 22cm. Find the angle

Answer: 43.3°
4. Ratio

Simplify: 10:8:8

Answer: 5:4:4
5. Statistics

A bag has 6 red and 4 blue balls. What is the probability of picking a red ball?

Answer: ³⁄₅

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