Keystones — Bedrock
Five GCSE retrieval questions · 3 November 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 21
Answer: 39 + 21 = 60 -
2. Algebra Substitution
If x = 5, find the value of 4x + 11
Answer: 31 -
3. Geometry Converting lengths
Convert 25cm to mm
Answer: 250mm -
4. Ratio Simplifying ratios
Simplify the ratio 28:8
Answer: 7:2 -
5. Statistics Mean
Find the mean of: 8, 4, 22, 17, 19
Answer: 14