Keystones — Bedrock
Five GCSE retrieval questions · 12 February 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 24
Answer: 21 + 24 = 45 -
2. Algebra Substitution
If x = 8, find the value of 3x + 4
Answer: 28 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 24:28
Answer: 6:7 -
5. Statistics Mean
Find the mean of: 13, 16, 7, 20
Answer: 14