Keystones — Bedrock
Five GCSE retrieval questions · 5 May 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 50 + 55
Answer: 50 + 55 = 105 -
2. Algebra Substitution
If x = 10, find the value of 8x + 7
Answer: 87 -
3. Geometry Converting lengths
Convert 17cm to mm
Answer: 170mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:16
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 21, 13, 11, 11
Answer: 14