Keystones — Lintel

Five GCSE retrieval questions · 7 May 2022 · mathsvault.uk/keystones

1. Number

Calculate: 778 + 815

Answer: 778 + 815 = 1593
2. Algebra

Solve: ^x⁄₇ = 4.8571428571429

Answer: x = 34
3. Geometry

Opposite = 19cm, adjacent = 14cm. Calculate the angle

Answer: 53.6°
4. Ratio

Find 19% of 251

Answer: 47.69
5. Statistics

Calculate the mean of: 50, 32, 10, 48, 27, 43, 31, 11

Answer: 31.5

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