Keystones — Bedrock
Five GCSE retrieval questions · 14 December 2021 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 72 + 66
Answer: 72 + 66 = 138 -
2. Algebra Substitution
If x = 10, find the value of 3x + 12
Answer: 42 -
3. Geometry Converting lengths
Convert 21cm to mm
Answer: 210mm -
4. Ratio Simplifying ratios
Simplify the ratio 6:18
Answer: 1:3 -
5. Statistics Mean
Find the mean of: 18, 5, 15
Answer: 12.666666666667