Keystones — Bedrock
Five GCSE retrieval questions · 7 October 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 12 + 47
Answer: 12 + 47 = 59 -
2. Algebra Substitution
If x = 2, find the value of 8x + 7
Answer: 23 -
3. Geometry Converting lengths
Convert 15cm to mm
Answer: 150mm -
4. Ratio Simplifying ratios
Simplify the ratio 30:40
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 9, 14, 16, 13
Answer: 13