Keystones — Bedrock
Five GCSE retrieval questions · 18 April 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 21
Answer: 20 + 21 = 41 -
2. Algebra Substitution
If x = 7, find the value of 7x + 6
Answer: 55 -
3. Geometry Converting lengths
Convert 16m to cm
Answer: 1600cm -
4. Ratio Simplifying ratios
Simplify the ratio 12:8
Answer: 3:2 -
5. Statistics Mean
Find the mean of: 17, 9, 8, 6, 25
Answer: 13