Keystones — Bedrock
Five GCSE retrieval questions · 29 October 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 71 + 72
Answer: 71 + 72 = 143 -
2. Algebra Substitution
If x = 10, find the value of 3x + 5
Answer: 35 -
3. Geometry Converting lengths
Convert 6m to cm
Answer: 600cm -
4. Ratio Simplifying ratios
Simplify the ratio 12:16
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 10, 2, 10, 10, 3
Answer: 7