Keystones — Bedrock
Five GCSE retrieval questions · 28 March 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 42 + 18
Answer: 42 + 18 = 60 -
2. Algebra Substitution
If x = 10, find the value of 7x + 3
Answer: 73 -
3. Geometry Converting lengths
Convert 48cm to mm
Answer: 480mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:14
Answer: 6:7 -
5. Statistics Mean
Find the mean of: 18, 3, 11, 20
Answer: 13