Keystones — Bedrock
Five GCSE retrieval questions · 7 December 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 12 + 20
Answer: 12 + 20 = 32 -
2. Algebra Substitution
If x = 4, find the value of 5x + 10
Answer: 30 -
3. Geometry Converting lengths
Convert 50cm to mm
Answer: 500mm -
4. Ratio Simplifying ratios
Simplify the ratio 6:4
Answer: 3:2 -
5. Statistics Mean
Find the mean of: 24, 15, 9, 4
Answer: 13