Keystones — Bedrock
Five GCSE retrieval questions · 5 December 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 57 + 82
Answer: 57 + 82 = 139 -
2. Algebra Substitution
If x = 10, find the value of 3x + 12
Answer: 42 -
3. Geometry Converting lengths
Convert 36cm to mm
Answer: 360mm -
4. Ratio Simplifying ratios
Simplify the ratio 9:21
Answer: 3:7 -
5. Statistics Mean
Find the mean of: 19, 20, 7, 10
Answer: 14