Keystones — Cornerstone
Five GCSE retrieval questions · 24 May 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 52 + 31
Answer: 52 + 31 = 83 -
2. Algebra
Solve: x + 6 = 26
Answer: x = 20 -
3. Geometry
Find the area of a circle with radius 8cm
Answer: 201.06cm² -
4. Ratio
Simplify the ratio 9:15
Answer: 3:5 -
5. Statistics
Find the range of: 27, 29, 18, 22, 23
Answer: 11