Keystones — Bedrock
Five GCSE retrieval questions · 11 February 2020 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 39
Answer: 31 + 39 = 70 -
2. Algebra Substitution
If x = 3, find the value of 6x + 3
Answer: 21 -
3. Geometry Converting lengths
Convert 10cm to mm
Answer: 100mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:16
Answer: 5:4 -
5. Statistics Mean
Find the mean of: 11, 17, 17, 4, 9
Answer: 11.6