Keystones — Bedrock
Five GCSE retrieval questions · 3 June 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 15
Answer: 21 + 15 = 36 -
2. Algebra Substitution
If x = 2, find the value of 3x + 9
Answer: 15 -
3. Geometry Converting lengths
Convert 7m to cm
Answer: 700cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:24
Answer: 5:8 -
5. Statistics Mean
Find the mean of: 18, 5, 4, 25
Answer: 13