Keystones — Bedrock
Five GCSE retrieval questions · 18 February 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 42 + 30
Answer: 42 + 30 = 72 -
2. Algebra Substitution
If x = 8, find the value of 8x + 4
Answer: 68 -
3. Geometry Converting lengths
Convert 30cm to mm
Answer: 300mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:16
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 15, 3, 9
Answer: 9