Keystones — Bedrock
Five GCSE retrieval questions · 20 June 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 18
Answer: 45 + 18 = 63 -
2. Algebra Substitution
If x = 10, find the value of 6x + 3
Answer: 63 -
3. Geometry Converting lengths
Convert 16m to cm
Answer: 1600cm -
4. Ratio Simplifying ratios
Simplify the ratio 28:32
Answer: 7:8 -
5. Statistics Mean
Find the mean of: 15, 5, 2, 20, 8
Answer: 10