Keystones — Bedrock
Five GCSE retrieval questions · 4 March 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 89
Answer: 31 + 89 = 120 -
2. Algebra Substitution
If x = 7, find the value of 3x + 8
Answer: 29 -
3. Geometry Converting lengths
Convert 10m to cm
Answer: 1000cm -
4. Ratio Simplifying ratios
Simplify the ratio 25:40
Answer: 5:8 -
5. Statistics Mean
Find the mean of: 24, 2, 12, 2
Answer: 10