Keystones — Bedrock
Five GCSE retrieval questions · 9 February 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 38
Answer: 21 + 38 = 59 -
2. Algebra Substitution
If x = 9, find the value of 6x + 3
Answer: 57 -
3. Geometry Converting lengths
Convert 12cm to mm
Answer: 120mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:15
Answer: 8:5 -
5. Statistics Mean
Find the mean of: 12, 18, 20, 10, 10
Answer: 14