Keystones — Bedrock
Five GCSE retrieval questions · 4 December 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 28 + 61
Answer: 28 + 61 = 89 -
2. Algebra Substitution
If x = 4, find the value of 7x + 10
Answer: 38 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 32:20
Answer: 8:5 -
5. Statistics Mean
Find the mean of: 3, 2, 10
Answer: 5