Keystones — Bedrock
Five GCSE retrieval questions · 3 October 2017 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 70 + 82
Answer: 70 + 82 = 152 -
2. Algebra Substitution
If x = 9, find the value of 5x + 5
Answer: 50 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 20:30
Answer: 2:3 -
5. Statistics Mean
Find the mean of: 23, 3, 9, 17
Answer: 13