Keystones — Cornerstone
Five GCSE retrieval questions · 23 May 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 78 + 43
Answer: 78 + 43 = 121 -
2. Algebra
Solve: x + 14 = 20
Answer: x = 6 -
3. Geometry
Opposite = 13cm, hypotenuse = 26cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 18:18:6
Answer: 3:3:1 -
5. Statistics
Calculate the mean of: 48, 5, 27, 13, 39, 44, 34
Answer: 30