Keystones — Bedrock
Five GCSE retrieval questions · 26 September 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 13
Answer: 25 + 13 = 38 -
2. Algebra Substitution
If x = 9, find the value of 5x + 7
Answer: 52 -
3. Geometry Converting lengths
Convert 16cm to mm
Answer: 160mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:15
Answer: 4:3 -
5. Statistics Mean
Find the mean of: 19, 11, 8, 18
Answer: 14