Keystones — Bedrock
Five GCSE retrieval questions · 5 September 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 57
Answer: 31 + 57 = 88 -
2. Algebra Substitution
If x = 2, find the value of 5x + 7
Answer: 17 -
3. Geometry Converting lengths
Convert 19m to cm
Answer: 1900cm -
4. Ratio Simplifying ratios
Simplify the ratio 18:21
Answer: 6:7 -
5. Statistics Mean
Find the mean of: 16, 17, 12
Answer: 15