Keystones — Bedrock
Five GCSE retrieval questions · 7 February 2016 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 21
Answer: 21 + 21 = 42 -
2. Algebra Substitution
If x = 8, find the value of 3x + 8
Answer: 32 -
3. Geometry Converting lengths
Convert 12m to cm
Answer: 1200cm -
4. Ratio Simplifying ratios
Simplify the ratio 12:18
Answer: 2:3 -
5. Statistics Mean
Find the mean of: 11, 19, 4, 2
Answer: 9