Keystones — Bedrock
Five GCSE retrieval questions · 30 December 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 45
Answer: 39 + 45 = 84 -
2. Algebra Substitution
If x = 7, find the value of 4x + 10
Answer: 38 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:14
Answer: 6:7 -
5. Statistics Mean
Find the mean of: 2, 15, 13
Answer: 10