Keystones — Bedrock
Five GCSE retrieval questions · 29 September 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 89
Answer: 20 + 89 = 109 -
2. Algebra Substitution
If x = 10, find the value of 6x + 6
Answer: 66 -
3. Geometry Converting lengths
Convert 18m to cm
Answer: 1800cm -
4. Ratio Simplifying ratios
Simplify the ratio 30:10
Answer: 3:1 -
5. Statistics Mean
Find the mean of: 6, 9, 7, 14
Answer: 9