Keystones — Bedrock
Five GCSE retrieval questions · 5 December 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 28 + 48
Answer: 28 + 48 = 76 -
2. Algebra Substitution
If x = 10, find the value of 3x + 10
Answer: 40 -
3. Geometry Converting lengths
Convert 17cm to mm
Answer: 170mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:24
Answer: 1:2 -
5. Statistics Mean
Find the mean of: 14, 13, 7, 10, 21
Answer: 13