Keystones — Lintel

Five GCSE retrieval questions · 23 June 2023 · mathsvault.uk/keystones

1. Number

Simplify: y² × y² × y⁴

Answer: y⁸
2. Algebra

Solve: ^x⁄₇ = 2.4285714285714

Answer: x = 17
3. Geometry

Calculate the hypotenuse when a = 5cm and b = 11cm

Answer: 12.08cm
4. Ratio

Find 43% of 285

Answer: 122.55
5. Statistics

Calculate the mean of: 44, 37, 21, 36, 44, 27, 26

Answer: 33.6

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