Keystones — Bedrock
Five GCSE retrieval questions · 4 December 2016 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 21
Answer: 21 + 21 = 42 -
2. Algebra Substitution
If x = 6, find the value of 5x + 7
Answer: 37 -
3. Geometry Converting lengths
Convert 8cm to mm
Answer: 80mm -
4. Ratio Simplifying ratios
Simplify the ratio 6:12
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 19, 15, 8, 20, 3
Answer: 13