Keystones — Bedrock
Five GCSE retrieval questions · 29 July 2014 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 80 + 82
Answer: 80 + 82 = 162 -
2. Algebra Substitution
If x = 9, find the value of 2x + 7
Answer: 25 -
3. Geometry Converting lengths
Convert 18m to cm
Answer: 1800cm -
4. Ratio Simplifying ratios
Simplify the ratio 20:40
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 16, 20, 19, 3, 2
Answer: 12