Keystones — Bedrock
Five GCSE retrieval questions · 17 October 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 41 + 41
Answer: 41 + 41 = 82 -
2. Algebra Substitution
If x = 6, find the value of 5x + 10
Answer: 40 -
3. Geometry Converting lengths
Convert 39cm to mm
Answer: 390mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:32
Answer: 5:8 -
5. Statistics Mean
Find the mean of: 24, 20, 8, 17, 6
Answer: 15