Keystones — Cornerstone
Five GCSE retrieval questions · 23 July 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 87 + 22
Answer: 87 + 22 = 109 -
2. Algebra
Solve: 8x = 112
Answer: x = 14 -
3. Geometry
Calculate the hypotenuse when a = 4cm and b = 15cm
Answer: 15.52cm -
4. Ratio
Find 82% of 328
Answer: 268.96 -
5. Statistics
Calculate the mean of: 26, 40, 19, 14, 33, 49, 44, 35
Answer: 32.5