Keystones — Bedrock
Five GCSE retrieval questions · 12 November 2019 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 80 + 48
Answer: 80 + 48 = 128 -
2. Algebra Substitution
If x = 9, find the value of 6x + 10
Answer: 64 -
3. Geometry Converting lengths
Convert 21cm to mm
Answer: 210mm -
4. Ratio Simplifying ratios
Simplify the ratio 15:18
Answer: 5:6 -
5. Statistics Mean
Find the mean of: 12, 3, 20, 13, 2
Answer: 10