Keystones — Bedrock
Five GCSE retrieval questions · 22 April 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 50 + 30
Answer: 50 + 30 = 80 -
2. Algebra Substitution
If x = 9, find the value of 4x + 7
Answer: 43 -
3. Geometry Converting lengths
Convert 16m to cm
Answer: 1600cm -
4. Ratio Simplifying ratios
Simplify the ratio 18:24
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 3, 3, 6, 20, 18
Answer: 10