Keystones — Bedrock
Five GCSE retrieval questions · 21 April 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 93 + 67
Answer: 93 + 67 = 160 -
2. Algebra Substitution
If x = 9, find the value of 8x + 10
Answer: 82 -
3. Geometry Converting lengths
Convert 3m to cm
Answer: 300cm -
4. Ratio Simplifying ratios
Simplify the ratio 12:4
Answer: 3:1 -
5. Statistics Mean
Find the mean of: 7, 4, 1, 20, 3
Answer: 7