Keystones — Bedrock
Five GCSE retrieval questions · 7 March 2014 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 23
Answer: 21 + 23 = 44 -
2. Algebra Substitution
If x = 9, find the value of 7x + 6
Answer: 69 -
3. Geometry Converting lengths
Convert 47cm to mm
Answer: 470mm -
4. Ratio Simplifying ratios
Simplify the ratio 30:20
Answer: 3:2 -
5. Statistics Mean
Find the mean of: 12, 20, 18, 17, 8
Answer: 15