Keystones — Cornerstone
Five GCSE retrieval questions · 20 October 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 893 + 215
Answer: 893 + 215 = 1108 -
2. Algebra
Simplify: 2x + 9x
Answer: 11x -
3. Geometry
Calculate the hypotenuse when a = 11cm and b = 9cm
Answer: 14.21cm -
4. Ratio
Find 75% of 235
Answer: 176.25 -
5. Statistics
Find the mean of: 8, 11, 15, 7, 9
Answer: 10