Keystones — Bedrock
Five GCSE retrieval questions · 6 February 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 38 + 20
Answer: 38 + 20 = 58 -
2. Algebra Substitution
If x = 3, find the value of 6x + 7
Answer: 25 -
3. Geometry Converting lengths
Convert 18m to cm
Answer: 1800cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:25
Answer: 3:5 -
5. Statistics Mean
Find the mean of: 16, 18, 18, 9, 9
Answer: 14