Keystones — Bedrock
Five GCSE retrieval questions · 18 December 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 49 + 57
Answer: 49 + 57 = 106 -
2. Algebra Substitution
If x = 9, find the value of 5x + 7
Answer: 52 -
3. Geometry Converting lengths
Convert 40cm to mm
Answer: 400mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:21
Answer: 8:7 -
5. Statistics Mean
Find the mean of: 11, 8, 10, 9, 2
Answer: 8