Keystones — Bedrock
Five GCSE retrieval questions · 24 January 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 38 + 43
Answer: 38 + 43 = 81 -
2. Algebra Substitution
If x = 2, find the value of 7x + 4
Answer: 18 -
3. Geometry Converting lengths
Convert 39cm to mm
Answer: 390mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:25
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 8, 11, 3, 25, 3
Answer: 10