Keystones — Bedrock
Five GCSE retrieval questions · 15 February 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 57 + 87
Answer: 57 + 87 = 144 -
2. Algebra Substitution
If x = 5, find the value of 3x + 6
Answer: 21 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 6:15
Answer: 2:5 -
5. Statistics Mean
Find the mean of: 9, 3, 18, 12, 13
Answer: 11