Keystones — Bedrock
Five GCSE retrieval questions · 16 October 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 48
Answer: 23 + 48 = 71 -
2. Algebra Substitution
If x = 3, find the value of 8x + 7
Answer: 31 -
3. Geometry Converting lengths
Convert 39cm to mm
Answer: 390mm -
4. Ratio Simplifying ratios
Simplify the ratio 15:21
Answer: 5:7 -
5. Statistics Mean
Find the mean of: 13, 16, 16, 15
Answer: 15