Keystones — Bedrock
Five GCSE retrieval questions · 27 December 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 70 + 68
Answer: 70 + 68 = 138 -
2. Algebra Substitution
If x = 10, find the value of 3x + 12
Answer: 42 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 6:12
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 9, 24, 6
Answer: 13