Keystones — Cornerstone
Five GCSE retrieval questions · 31 December 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 63 + ? = 114
Answer: 51 -
2. Algebra
Expand: 2(5x + 4)
Answer: 10x + 8 -
3. Geometry
Calculate the area of a circle with diameter 8cm
Answer: 50.27cm² -
4. Ratio
Simplify the ratio 10:15
Answer: 2:3 -
5. Statistics
Calculate the mean of: 36, 29, 41, 40, 47, 27
Answer: 36.7