Keystones — Bedrock
Five GCSE retrieval questions · 13 September 2014 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 15
Answer: 25 + 15 = 40 -
2. Algebra Substitution
If x = 9, find the value of 7x + 12
Answer: 75 -
3. Geometry Converting lengths
Convert 31cm to mm
Answer: 310mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:12
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 20, 7, 3
Answer: 10