Keystones — Bedrock
Five GCSE retrieval questions · 22 June 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 42
Answer: 39 + 42 = 81 -
2. Algebra Substitution
If x = 8, find the value of 4x + 5
Answer: 37 -
3. Geometry Converting lengths
Convert 15cm to mm
Answer: 150mm -
4. Ratio Simplifying ratios
Simplify the ratio 4:12
Answer: 1:3 -
5. Statistics Mean
Find the mean of: 15, 10, 19, 12
Answer: 14