Keystones — Bedrock
Five GCSE retrieval questions · 8 November 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 42 + 30
Answer: 42 + 30 = 72 -
2. Algebra Substitution
If x = 5, find the value of 8x + 8
Answer: 48 -
3. Geometry Converting lengths
Convert 6cm to mm
Answer: 60mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:24
Answer: 5:6 -
5. Statistics Mean
Find the mean of: 6, 18, 12
Answer: 12