Keystones — Bedrock
Five GCSE retrieval questions · 5 September 2020 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 33 + 77
Answer: 33 + 77 = 110 -
2. Algebra Substitution
If x = 7, find the value of 6x + 3
Answer: 45 -
3. Geometry Converting lengths
Convert 42cm to mm
Answer: 420mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:24
Answer: 1:3 -
5. Statistics Mean
Find the mean of: 20, 19, 17, 3, 10
Answer: 13.8