Keystones — Cornerstone
Five GCSE retrieval questions · 27 September 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 88 + 58
Answer: 88 + 58 = 146 -
2. Algebra
Solve: x + 9 = 18
Answer: x = 9 -
3. Geometry
Calculate the hypotenuse when a = 11cm and b = 7cm
Answer: 13.04cm -
4. Ratio
Simplify the ratio 12:10
Answer: 6:5 -
5. Statistics
Calculate the mean of: 13, 22, 15, 12, 18, 39, 45, 49
Answer: 26.6