Keystones — Bedrock
Five GCSE retrieval questions · 16 September 2020 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 47 + 21
Answer: 47 + 21 = 68 -
2. Algebra Substitution
If x = 3, find the value of 6x + 6
Answer: 24 -
3. Geometry Converting lengths
Convert 42cm to mm
Answer: 420mm -
4. Ratio Simplifying ratios
Simplify the ratio 32:20
Answer: 8:5 -
5. Statistics Mean
Find the mean of: 20, 17, 9, 11
Answer: 14.25