Keystones — Bedrock
Five GCSE retrieval questions · 15 December 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 66 + 80
Answer: 66 + 80 = 146 -
2. Algebra Substitution
If x = 9, find the value of 3x + 9
Answer: 36 -
3. Geometry Converting lengths
Convert 18m to cm
Answer: 1800cm -
4. Ratio Simplifying ratios
Simplify the ratio 20:10
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 18, 12, 18, 8
Answer: 14