Keystones — Bedrock
Five GCSE retrieval questions · 11 May 2014 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 76
Answer: 23 + 76 = 99 -
2. Algebra Substitution
If x = 9, find the value of 7x + 9
Answer: 72 -
3. Geometry Converting lengths
Convert 21cm to mm
Answer: 210mm -
4. Ratio Simplifying ratios
Simplify the ratio 16:20
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 7, 15, 12, 7, 19
Answer: 12