Keystones — Lintel

Five GCSE retrieval questions · 9 February 2023 · mathsvault.uk/keystones

1. Number

Calculate: 998 + 802

Answer: 1800
2. Algebra

Find the next term: 1, 4, 10, 19, ...

Answer: 31
3. Geometry

Adjacent = 17cm, hypotenuse = 33cm. Find the angle

Answer: 59°
4. Ratio

Simplify: 24:20:8

Answer: 6:5:2
5. Statistics

A bag has 8 red and 7 blue balls. What is the probability of picking a red ball?

Answer: ⁸⁄₁₅

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