Keystones — Bedrock
Five GCSE retrieval questions · 11 November 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 30
Answer: 23 + 30 = 53 -
2. Algebra Substitution
If x = 9, find the value of 4x + 6
Answer: 42 -
3. Geometry Converting lengths
Convert 2m to cm
Answer: 200cm -
4. Ratio Simplifying ratios
Simplify the ratio 21:18
Answer: 7:6 -
5. Statistics Mean
Find the mean of: 12, 16, 17
Answer: 15