Keystones — Cornerstone
Five GCSE retrieval questions · 8 May 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 31 + 43
Answer: 31 + 43 = 74 -
2. Algebra
Expand: 4(x + 7)
Answer: 4x + 28 -
3. Geometry
Calculate the area of a circle with diameter 19cm
Answer: 283.53cm² -
4. Ratio
Calculate 25% of 36
Answer: 9 -
5. Statistics
Calculate the mean of: 24, 25, 5, 16, 40, 42
Answer: 25.3