Keystones — Bedrock
Five GCSE retrieval questions · 24 December 2020 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 27 + 25
Answer: 27 + 25 = 52 -
2. Algebra Substitution
If x = 3, find the value of 5x + 5
Answer: 20 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 14:6
Answer: 7:3 -
5. Statistics Mean
Find the mean of: 9, 20, 10
Answer: 13