Keystones — Bedrock
Five GCSE retrieval questions · 11 April 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 15 + 16
Answer: 15 + 16 = 31 -
2. Algebra Substitution
If x = 5, find the value of 3x + 9
Answer: 24 -
3. Geometry Converting lengths
Convert 39cm to mm
Answer: 390mm -
4. Ratio Simplifying ratios
Simplify the ratio 10:6
Answer: 5:3 -
5. Statistics Mean
Find the mean of: 2, 15, 1
Answer: 6