Keystones — Bedrock
Five GCSE retrieval questions · 31 March 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 41 + 20
Answer: 41 + 20 = 61 -
2. Algebra Substitution
If x = 5, find the value of 3x + 9
Answer: 24 -
3. Geometry Converting lengths
Convert 12cm to mm
Answer: 120mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:15
Answer: 4:3 -
5. Statistics Mean
Find the mean of: 17, 4, 2, 5, 2
Answer: 6