Keystones — Cornerstone
Five GCSE retrieval questions · 23 May 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 87 + ? = 123
Answer: 36 -
2. Algebra
Solve: x + 2 = 15
Answer: x = 13 -
3. Geometry
Calculate the hypotenuse when a = 3cm and b = 12cm
Answer: 12.37cm -
4. Ratio
Simplify the ratio 30:40
Answer: 3:4 -
5. Statistics
Find the mean of: 4, 17, 12
Answer: 11