Keystones — Bedrock
Five GCSE retrieval questions · 16 July 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 90 + 68
Answer: 90 + 68 = 158 -
2. Algebra Substitution
If x = 10, find the value of 6x + 10
Answer: 70 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 16:20
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 6, 1, 12, 9
Answer: 7