Keystones — Bedrock
Five GCSE retrieval questions · 17 February 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 95 + 81
Answer: 95 + 81 = 176 -
2. Algebra Substitution
If x = 10, find the value of 3x + 9
Answer: 39 -
3. Geometry Converting lengths
Convert 45cm to mm
Answer: 450mm -
4. Ratio Simplifying ratios
Simplify the ratio 6:18
Answer: 1:3 -
5. Statistics Mean
Find the mean of: 4, 18, 12, 14
Answer: 12