Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2023 · mathsvault.uk/keystones

1. Number

Add: ⁶⁄₇ + ³⁄₅

Answer: ⁵¹⁄₃₅
2. Algebra

Solve: x + 2 = 22

Answer: x = 20
3. Geometry

Opposite = 11cm, adjacent = 17cm. Calculate the angle

Answer: 32.9°
4. Ratio

Simplify the ratio 25:30

Answer: 5:6
5. Statistics

Calculate the mean of: 39, 25, 44, 21, 6, 13, 21

Answer: 24.1

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