Keystones — Bedrock
Five GCSE retrieval questions · 15 March 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 10 + 21
Answer: 10 + 21 = 31 -
2. Algebra Substitution
If x = 4, find the value of 5x + 9
Answer: 29 -
3. Geometry Converting lengths
Convert 19m to cm
Answer: 1900cm -
4. Ratio Simplifying ratios
Simplify the ratio 28:24
Answer: 7:6 -
5. Statistics Mean
Find the mean of: 11, 15, 7, 9, 13
Answer: 11