Keystones — Cornerstone
Five GCSE retrieval questions · 5 July 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 77 + 35
Answer: 77 + 35 = 112 -
2. Algebra
Solve: x + 13 = 21
Answer: x = 8 -
3. Geometry
Calculate the area of a circle with diameter 23cm
Answer: 415.48cm² -
4. Ratio
Simplify: 12:20:16
Answer: 3:5:4 -
5. Statistics
Calculate the mean of: 26, 21, 49, 35, 17, 18, 22
Answer: 26.9