Keystones — Bedrock
Five GCSE retrieval questions · 4 October 2014 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 41 + 36
Answer: 41 + 36 = 77 -
2. Algebra Substitution
If x = 9, find the value of 8x + 5
Answer: 77 -
3. Geometry Converting lengths
Convert 20cm to mm
Answer: 200mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:10
Answer: 5:2 -
5. Statistics Mean
Find the mean of: 18, 16, 7, 19, 15
Answer: 15