Keystones — Bedrock
Five GCSE retrieval questions · 21 July 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 10 + 27
Answer: 10 + 27 = 37 -
2. Algebra Substitution
If x = 3, find the value of 4x + 8
Answer: 20 -
3. Geometry Converting lengths
Convert 36cm to mm
Answer: 360mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:40
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 9, 15, 21, 3
Answer: 12