Keystones — Cornerstone
Five GCSE retrieval questions · 29 July 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 73 + 57
Answer: 73 + 57 = 130 -
2. Algebra
Solve: x + 4 = 21
Answer: x = 17 -
3. Geometry
Opposite = 11cm, adjacent = 12cm. Calculate the angle
Answer: 42.5° -
4. Ratio
Simplify the ratio 9:12
Answer: 3:4 -
5. Statistics
Calculate the mean of: 49, 27, 47, 39, 19, 22, 12
Answer: 30.7