Keystones — Bedrock
Five GCSE retrieval questions · 11 October 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 42 + 19
Answer: 42 + 19 = 61 -
2. Algebra Substitution
If x = 8, find the value of 8x + 9
Answer: 73 -
3. Geometry Converting lengths
Convert 6cm to mm
Answer: 60mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:12
Answer: 2:3 -
5. Statistics Mean
Find the mean of: 5, 15, 2, 13, 10
Answer: 9