Keystones — Bedrock
Five GCSE retrieval questions · 16 September 2016 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 45
Answer: 20 + 45 = 65 -
2. Algebra Substitution
If x = 10, find the value of 7x + 12
Answer: 82 -
3. Geometry Converting lengths
Convert 39cm to mm
Answer: 390mm -
4. Ratio Simplifying ratios
Simplify the ratio 15:20
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 12, 3, 17, 20
Answer: 13