Keystones — Cornerstone
Five GCSE retrieval questions · 30 January 2023 · mathsvault.uk/keystones
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1. Number
Find the total of 152, 222, and 84
Answer: 458 -
2. Algebra
Solve: x + 3 = 9
Answer: x = 6 -
3. Geometry
Calculate the hypotenuse when a = 8cm and b = 4cm
Answer: 8.94cm -
4. Ratio
Simplify the ratio 28:24
Answer: 7:6 -
5. Statistics
Calculate the mean of: 13, 44, 27, 33, 30, 33, 45, 35
Answer: 32.5