Keystones — Bedrock
Five GCSE retrieval questions · 21 October 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 36 + 31
Answer: 36 + 31 = 67 -
2. Algebra Substitution
If x = 6, find the value of 7x + 8
Answer: 50 -
3. Geometry Converting lengths
Convert 45cm to mm
Answer: 450mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:10
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 19, 20, 11, 12, 13
Answer: 15