Keystones — Bedrock
Five GCSE retrieval questions · 12 June 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 77 + 20
Answer: 77 + 20 = 97 -
2. Algebra Substitution
If x = 10, find the value of 3x + 3
Answer: 33 -
3. Geometry Converting lengths
Convert 10m to cm
Answer: 1000cm -
4. Ratio Simplifying ratios
Simplify the ratio 18:15
Answer: 6:5 -
5. Statistics Mean
Find the mean of: 8, 6, 25
Answer: 13