Keystones — Bedrock
Five GCSE retrieval questions · 30 May 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 15 + 15
Answer: 15 + 15 = 30 -
2. Algebra Substitution
If x = 7, find the value of 8x + 7
Answer: 63 -
3. Geometry Converting lengths
Convert 45cm to mm
Answer: 450mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:24
Answer: 7:8 -
5. Statistics Mean
Find the mean of: 15, 1, 12, 20
Answer: 12