Keystones — Cornerstone
Five GCSE retrieval questions · 10 December 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 85 + ? = 155
Answer: 70 -
2. Algebra
Solve: x + 2 = 5
Answer: x = 3 -
3. Geometry
Calculate the hypotenuse when a = 10cm and b = 12cm
Answer: 15.62cm -
4. Ratio
Simplify: 18:18:6
Answer: 3:3:1 -
5. Statistics
Find the mean of: 12, 3, 19
Answer: 11.333333333333