Keystones — Lintel

Five GCSE retrieval questions · 30 July 2024 · mathsvault.uk/keystones

1. Number

Calculate: 991 + 608

Answer: 1599
2. Algebra

Solve: 7x = 28

Answer: x = 4
3. Geometry

Find the distance between (-4, -3) and (4, 3)

Answer: 10
4. Ratio

Simplify: 10:6:8

Answer: 5:3:4
5. Statistics

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

Answer: ⁷⁄₁₅

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