Keystones — Bedrock
Five GCSE retrieval questions · 15 August 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 33
Answer: 31 + 33 = 64 -
2. Algebra Substitution
If x = 9, find the value of 8x + 5
Answer: 77 -
3. Geometry Converting lengths
Convert 14m to cm
Answer: 1400cm -
4. Ratio Simplifying ratios
Simplify the ratio 6:21
Answer: 2:7 -
5. Statistics Mean
Find the mean of: 15, 9, 9, 15
Answer: 12