Keystones — Bedrock
Five GCSE retrieval questions · 4 September 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 45
Answer: 39 + 45 = 84 -
2. Algebra Substitution
If x = 9, find the value of 4x + 5
Answer: 41 -
3. Geometry Converting lengths
Convert 15cm to mm
Answer: 150mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:18
Answer: 4:3 -
5. Statistics Mean
Find the mean of: 14, 7, 12, 15, 2
Answer: 10