Keystones — Cornerstone
Five GCSE retrieval questions · 26 July 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 40 + 72
Answer: 40 + 72 = 112 -
2. Algebra
Solve: x + 4 = 17
Answer: x = 13 -
3. Geometry
Opposite = 13cm, hypotenuse = 26cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 12:12:8
Answer: 3:3:2 -
5. Statistics
Find the mean of: 9, 8, 10, 20, 5
Answer: 10.4