Keystones — Bedrock
Five GCSE retrieval questions · 19 March 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 32
Answer: 39 + 32 = 71 -
2. Algebra Substitution
If x = 5, find the value of 5x + 4
Answer: 29 -
3. Geometry Converting lengths
Convert 9cm to mm
Answer: 90mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:21
Answer: 8:7 -
5. Statistics Mean
Find the mean of: 18, 9, 4, 22, 7
Answer: 12