Keystones — Bedrock
Five GCSE retrieval questions · 24 March 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 38 + 39
Answer: 38 + 39 = 77 -
2. Algebra Substitution
If x = 10, find the value of 8x + 9
Answer: 89 -
3. Geometry Converting lengths
Convert 13m to cm
Answer: 1300cm -
4. Ratio Simplifying ratios
Simplify the ratio 16:6
Answer: 8:3 -
5. Statistics Mean
Find the mean of: 17, 20, 13, 6
Answer: 14