Keystones — Bedrock
Five GCSE retrieval questions · 23 March 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 83 + 45
Answer: 83 + 45 = 128 -
2. Algebra Substitution
If x = 9, find the value of 2x + 11
Answer: 29 -
3. Geometry Converting lengths
Convert 7m to cm
Answer: 700cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:21
Answer: 5:7 -
5. Statistics Mean
Find the mean of: 2, 20, 1, 9
Answer: 8