Keystones — Bedrock
Five GCSE retrieval questions · 4 December 2015 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 80 + 97
Answer: 80 + 97 = 177 -
2. Algebra Substitution
If x = 7, find the value of 4x + 7
Answer: 35 -
3. Geometry Converting lengths
Convert 39cm to mm
Answer: 390mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:35
Answer: 5:7 -
5. Statistics Mean
Find the mean of: 2, 20, 11, 7
Answer: 10