Keystones — Bedrock
Five GCSE retrieval questions · 8 June 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 10 + 20
Answer: 10 + 20 = 30 -
2. Algebra Substitution
If x = 6, find the value of 8x + 3
Answer: 51 -
3. Geometry Converting lengths
Convert 19cm to mm
Answer: 190mm -
4. Ratio Simplifying ratios
Simplify the ratio 35:20
Answer: 7:4 -
5. Statistics Mean
Find the mean of: 15, 12, 9, 24, 10
Answer: 14