Keystones — Bedrock
Five GCSE retrieval questions · 29 September 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 92 + 52
Answer: 92 + 52 = 144 -
2. Algebra Substitution
If x = 10, find the value of 6x + 11
Answer: 71 -
3. Geometry Converting lengths
Convert 18cm to mm
Answer: 180mm -
4. Ratio Simplifying ratios
Simplify the ratio 15:40
Answer: 3:8 -
5. Statistics Mean
Find the mean of: 21, 20, 9, 10
Answer: 15