Keystones — Bedrock
Five GCSE retrieval questions · 17 September 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 30 + 48
Answer: 30 + 48 = 78 -
2. Algebra Substitution
If x = 7, find the value of 8x + 5
Answer: 61 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 12:24
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 11, 13, 13, 3
Answer: 10