Keystones — Bedrock
Five GCSE retrieval questions · 10 August 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 87 + 37
Answer: 87 + 37 = 124 -
2. Algebra Substitution
If x = 10, find the value of 2x + 5
Answer: 25 -
3. Geometry Converting lengths
Convert 15m to cm
Answer: 1500cm -
4. Ratio Simplifying ratios
Simplify the ratio 25:20
Answer: 5:4 -
5. Statistics Mean
Find the mean of: 5, 17, 10, 24
Answer: 14