Keystones — Bedrock
Five GCSE retrieval questions · 22 June 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 18 + 12
Answer: 18 + 12 = 30 -
2. Algebra Substitution
If x = 8, find the value of 3x + 6
Answer: 30 -
3. Geometry Converting lengths
Convert 33cm to mm
Answer: 330mm -
4. Ratio Simplifying ratios
Simplify the ratio 16:10
Answer: 8:5 -
5. Statistics Mean
Find the mean of: 15, 10, 17, 14, 19
Answer: 15