Keystones — Cornerstone
Five GCSE retrieval questions · 8 July 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 49 + ? = 116
Answer: 67 -
2. Algebra
Solve: 2x = 26
Answer: x = 13 -
3. Geometry
Calculate perimeter: two sides are 15cm and 10cm at right angles
Answer: 43cm -
4. Ratio
Simplify: 9:6:6
Answer: 3:2:2 -
5. Statistics
Find the mean of: 2, 8, 15, 20, 8
Answer: 10.6