Keystones — Bedrock
Five GCSE retrieval questions · 7 February 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 27
Answer: 23 + 27 = 50 -
2. Algebra Substitution
If x = 7, find the value of 5x + 8
Answer: 43 -
3. Geometry Converting lengths
Convert 16cm to mm
Answer: 160mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:21
Answer: 4:7 -
5. Statistics Mean
Find the mean of: 8, 18, 7, 3
Answer: 9