Keystones — Bedrock
Five GCSE retrieval questions · 22 January 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 18 + 25
Answer: 18 + 25 = 43 -
2. Algebra Substitution
If x = 7, find the value of 7x + 6
Answer: 55 -
3. Geometry Converting lengths
Convert 20cm to mm
Answer: 200mm -
4. Ratio Simplifying ratios
Simplify the ratio 9:15
Answer: 3:5 -
5. Statistics Mean
Find the mean of: 15, 6, 19, 20
Answer: 15