Keystones — Bedrock
Five GCSE retrieval questions · 28 December 2016 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 15
Answer: 20 + 15 = 35 -
2. Algebra Substitution
If x = 6, find the value of 2x + 12
Answer: 24 -
3. Geometry Converting lengths
Convert 9m to cm
Answer: 900cm -
4. Ratio Simplifying ratios
Simplify the ratio 21:15
Answer: 7:5 -
5. Statistics Mean
Find the mean of: 13, 2, 12
Answer: 9