Keystones — Bedrock
Five GCSE retrieval questions · 21 July 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 87 + 63
Answer: 87 + 63 = 150 -
2. Algebra Substitution
If x = 10, find the value of 7x + 7
Answer: 77 -
3. Geometry Converting lengths
Convert 16cm to mm
Answer: 160mm -
4. Ratio Simplifying ratios
Simplify the ratio 15:35
Answer: 3:7 -
5. Statistics Mean
Find the mean of: 22, 11, 7, 20
Answer: 15