Keystones — Bedrock
Five GCSE retrieval questions · 14 November 2022 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 47
Answer: 31 + 47 = 78 -
2. Algebra Substitution
If x = 10, find the value of 2x + 6
Answer: 26 -
3. Geometry Converting lengths
Convert 48cm to mm
Answer: 480mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:40
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 20, 17, 3, 16, 15
Answer: 14.2