Keystones — Bedrock
Five GCSE retrieval questions · 20 October 2018 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 30
Answer: 25 + 30 = 55 -
2. Algebra Substitution
If x = 5, find the value of 7x + 10
Answer: 45 -
3. Geometry Converting lengths
Convert 2m to cm
Answer: 200cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:21
Answer: 5:7 -
5. Statistics Mean
Find the mean of: 12, 9, 20
Answer: 13.666666666667