Keystones — Bedrock
Five GCSE retrieval questions · 18 October 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 79 + 38
Answer: 79 + 38 = 117 -
2. Algebra Substitution
If x = 3, find the value of 7x + 4
Answer: 25 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 21:9
Answer: 7:3 -
5. Statistics Mean
Find the mean of: 5, 12, 2, 20, 16
Answer: 11