Keystones — Bedrock
Five GCSE retrieval questions · 10 February 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 75 + 75
Answer: 75 + 75 = 150 -
2. Algebra Substitution
If x = 8, find the value of 5x + 6
Answer: 46 -
3. Geometry Converting lengths
Convert 9m to cm
Answer: 900cm -
4. Ratio Simplifying ratios
Simplify the ratio 28:8
Answer: 7:2 -
5. Statistics Mean
Find the mean of: 13, 8, 21
Answer: 14