Keystones — Lintel

Five GCSE retrieval questions · 27 March 2023 · mathsvault.uk/keystones

1. Number

Calculate: 994 + 757

Answer: 1751
2. Algebra

Solve: ^x⁄₈ = 3.25

Answer: x = 26
3. Geometry

Calculate the hypotenuse when a = 7cm and b = 10cm

Answer: 12.21cm
4. Ratio

Simplify the ratio 5m:500cm

Answer: 1:100
5. Statistics

Calculate the mean of: 22, 9, 15, 50, 13, 9, 16

Answer: 19.1

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