Keystones — Bedrock
Five GCSE retrieval questions · 13 December 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 42 + 36
Answer: 42 + 36 = 78 -
2. Algebra Substitution
If x = 5, find the value of 3x + 5
Answer: 20 -
3. Geometry Converting lengths
Convert 21cm to mm
Answer: 210mm -
4. Ratio Simplifying ratios
Simplify the ratio 40:20
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 17, 2, 5
Answer: 8