Keystones — Lintel

Five GCSE retrieval questions · 19 March 2023 · mathsvault.uk/keystones

1. Number

Find the total of 215, 187, and 55

Answer: 457
2. Algebra

Solve: ^x⁄₂ = 14

Answer: x = 28
3. Geometry

Find c if a = 19cm and b = 17cm in a right triangle

Answer: 25.5cm
4. Ratio

Find 16% of 351

Answer: 56.16
5. Statistics

Calculate the mean of: 30, 41, 12, 49, 20, 40, 43, 33

Answer: 33.5

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