Keystones — Bedrock
Five GCSE retrieval questions · 21 March 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 44
Answer: 21 + 44 = 65 -
2. Algebra Substitution
If x = 4, find the value of 3x + 10
Answer: 22 -
3. Geometry Converting lengths
Convert 17m to cm
Answer: 1700cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:21
Answer: 5:7 -
5. Statistics Mean
Find the mean of: 20, 8, 4, 16
Answer: 12