Keystones — Cornerstone
Five GCSE retrieval questions · 22 September 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 52 + 75
Answer: 52 + 75 = 127 -
2. Algebra
Solve: 3x = 15
Answer: x = 5 -
3. Geometry
Calculate the area of a circle with diameter 22cm
Answer: 380.13cm² -
4. Ratio
Simplify: 12:8:16
Answer: 3:2:4 -
5. Statistics
Calculate the mean of: 33, 37, 33, 27, 19, 32, 41
Answer: 31.7