Keystones — Cornerstone
Five GCSE retrieval questions · 5 May 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 91 + 79
Answer: 91 + 79 = 170 -
2. Algebra
Solve: x + 10 = 30
Answer: x = 20 -
3. Geometry
Find the area of a right triangle with base 4cm and height 9cm
Answer: 18cm² -
4. Ratio
Simplify: 9:9:12
Answer: 3:3:4 -
5. Statistics
Calculate the mean of: 41, 13, 18, 46, 7, 45, 43
Answer: 30.4