Keystones — Bedrock
Five GCSE retrieval questions · 11 February 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 35
Answer: 45 + 35 = 80 -
2. Algebra Substitution
If x = 6, find the value of 8x + 7
Answer: 55 -
3. Geometry Converting lengths
Convert 27cm to mm
Answer: 270mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:16
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 16, 16, 17, 5, 11
Answer: 13