Keystones — Bedrock
Five GCSE retrieval questions · 15 March 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 95 + 55
Answer: 95 + 55 = 150 -
2. Algebra Substitution
If x = 5, find the value of 4x + 5
Answer: 25 -
3. Geometry Converting lengths
Convert 15cm to mm
Answer: 150mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:20
Answer: 3:5 -
5. Statistics Mean
Find the mean of: 10, 20, 20, 6
Answer: 14