Keystones — Cornerstone
Five GCSE retrieval questions · 7 August 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 34 + ? = 126
Answer: 92 -
2. Algebra
Solve: 3x = 12
Answer: x = 4 -
3. Geometry
Find the area of a circle with radius 10cm
Answer: 314.16cm² -
4. Ratio
Simplify the ratio 15:40
Answer: 3:8 -
5. Statistics
Calculate the mean of: 50, 28, 20, 18, 29, 8, 13
Answer: 23.7