Keystones — Bedrock
Five GCSE retrieval questions · 18 May 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 45
Answer: 21 + 45 = 66 -
2. Algebra Substitution
If x = 10, find the value of 7x + 5
Answer: 75 -
3. Geometry Converting lengths
Convert 4m to cm
Answer: 400cm -
4. Ratio Simplifying ratios
Simplify the ratio 20:12
Answer: 5:3 -
5. Statistics Mean
Find the mean of: 3, 10, 18, 13
Answer: 11