Keystones — Bedrock
Five GCSE retrieval questions · 15 March 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 81 + 64
Answer: 81 + 64 = 145 -
2. Algebra Substitution
If x = 7, find the value of 2x + 7
Answer: 21 -
3. Geometry Converting lengths
Convert 34cm to mm
Answer: 340mm -
4. Ratio Simplifying ratios
Simplify the ratio 4:8
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 20, 8, 7, 15, 20
Answer: 14