Keystones — Bedrock
Five GCSE retrieval questions · 21 January 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 38
Answer: 39 + 38 = 77 -
2. Algebra Substitution
If x = 3, find the value of 6x + 3
Answer: 21 -
3. Geometry Converting lengths
Convert 47cm to mm
Answer: 470mm -
4. Ratio Simplifying ratios
Simplify the ratio 14:10
Answer: 7:5 -
5. Statistics Mean
Find the mean of: 7, 16, 3, 19, 10
Answer: 11