Keystones — Bedrock
Five GCSE retrieval questions · 10 March 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 20
Answer: 25 + 20 = 45 -
2. Algebra Substitution
If x = 2, find the value of 8x + 7
Answer: 23 -
3. Geometry Converting lengths
Convert 35cm to mm
Answer: 350mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:30
Answer: 2:3 -
5. Statistics Mean
Find the mean of: 20, 14, 9, 17
Answer: 15