Keystones — Bedrock
Five GCSE retrieval questions · 29 February 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 70
Answer: 25 + 70 = 95 -
2. Algebra Substitution
If x = 5, find the value of 3x + 9
Answer: 24 -
3. Geometry Converting lengths
Convert 19m to cm
Answer: 1900cm -
4. Ratio Simplifying ratios
Simplify the ratio 20:35
Answer: 4:7 -
5. Statistics Mean
Find the mean of: 20, 10, 18, 8, 9
Answer: 13