Keystones — Cornerstone
Five GCSE retrieval questions · 4 February 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 41 + ? = 112
Answer: 71 -
2. Algebra
Solve: x + 7 = 22
Answer: x = 15 -
3. Geometry
Calculate the area of a circle with diameter 19cm
Answer: 283.53cm² -
4. Ratio
Simplify: 12:24:24
Answer: 1:2:2 -
5. Statistics
Calculate the range of: 92, 118, 49, 98, 39, 68
Answer: 79