Keystones — Cornerstone
Five GCSE retrieval questions · 14 October 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 144 + 753
Answer: 144 + 753 = 897 -
2. Algebra
Expand: 6(3x + 9)
Answer: 18x + 54 -
3. Geometry
Calculate the area of a circle with diameter 18cm
Answer: 254.47cm² -
4. Ratio
Simplify the ratio 35:25
Answer: 7:5 -
5. Statistics
Calculate the mean of: 21, 23, 44, 31, 5, 42, 27
Answer: 27.6