Keystones — Bedrock
Five GCSE retrieval questions · 18 April 2016 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 27 + 28
Answer: 27 + 28 = 55 -
2. Algebra Substitution
If x = 7, find the value of 7x + 9
Answer: 58 -
3. Geometry Converting lengths
Convert 20cm to mm
Answer: 200mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:28
Answer: 2:7 -
5. Statistics Mean
Find the mean of: 7, 6, 16, 5, 21
Answer: 11