Keystones — Bedrock
Five GCSE retrieval questions · 9 September 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 77
Answer: 20 + 77 = 97 -
2. Algebra Substitution
If x = 5, find the value of 3x + 3
Answer: 18 -
3. Geometry Converting lengths
Convert 11cm to mm
Answer: 110mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:9
Answer: 4:3 -
5. Statistics Mean
Find the mean of: 20, 15, 1, 20
Answer: 14