Keystones — Cornerstone
Five GCSE retrieval questions · 28 February 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 42 + 49
Answer: 42 + 49 = 91 -
2. Algebra
Solve: 7x = 63
Answer: x = 9 -
3. Geometry
Opposite = 14cm, hypotenuse = 28cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 6:18:18
Answer: 1:3:3 -
5. Statistics
Find the range of: 17, 26, 23, 39, 13
Answer: 26