Keystones — Bedrock
Five GCSE retrieval questions · 2 April 2025 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 39
Answer: 39 + 39 = 78 -
2. Algebra Substitution
If x = 3, find the value of 6x + 3
Answer: 21 -
3. Geometry Converting lengths
Convert 16m to cm
Answer: 1600cm -
4. Ratio Simplifying ratios
Simplify the ratio 8:16
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 8, 16, 17
Answer: 13.666666666667