Keystones — Bedrock
Five GCSE retrieval questions · 22 November 2017 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 87 + 81
Answer: 87 + 81 = 168 -
2. Algebra Substitution
If x = 3, find the value of 3x + 8
Answer: 17 -
3. Geometry Converting lengths
Convert 4m to cm
Answer: 400cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:9
Answer: 5:3 -
5. Statistics Mean
Find the mean of: 20, 11, 7, 19, 3
Answer: 12