Keystones — Bedrock
Five GCSE retrieval questions · 20 February 2014 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 24 + 53
Answer: 24 + 53 = 77 -
2. Algebra Substitution
If x = 5, find the value of 2x + 12
Answer: 22 -
3. Geometry Converting lengths
Convert 50cm to mm
Answer: 500mm -
4. Ratio Simplifying ratios
Simplify the ratio 30:25
Answer: 6:5 -
5. Statistics Mean
Find the mean of: 12, 4, 6, 18
Answer: 10