Keystones — Cornerstone

Five GCSE retrieval questions · 29 June 2022 · mathsvault.uk/keystones

1. Number

Add: ¹⁄₇ + ²⁄₅

Answer: ¹⁹⁄₃₅
2. Algebra

Solve: 7x = 21

Answer: x = 3
3. Geometry

Opposite = 11cm, hypotenuse = 15.6cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 25% of 121

Answer: 30.25
5. Statistics

Find the mean of: 3, 8, 2, 16, 4

Answer: 6.6

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