Keystones — Bedrock
Five GCSE retrieval questions · 20 November 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 21
Answer: 31 + 21 = 52 -
2. Algebra Substitution
If x = 2, find the value of 8x + 10
Answer: 26 -
3. Geometry Converting lengths
Convert 10m to cm
Answer: 1000cm -
4. Ratio Simplifying ratios
Simplify the ratio 35:20
Answer: 7:4 -
5. Statistics Mean
Find the mean of: 3, 7, 23
Answer: 11