Keystones — Cornerstone
Five GCSE retrieval questions · 25 October 2023 · mathsvault.uk/keystones
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1. Number
Find the total of 183, 146, and 89
Answer: 418 -
2. Algebra
Solve: 7x = 42
Answer: x = 6 -
3. Geometry
Find the perimeter of a right triangle with sides 5cm and 12cm
Answer: 30cm -
4. Ratio
Find 25% of 97
Answer: 24.25 -
5. Statistics
Calculate the mean of: 30, 6, 24, 38, 16, 26
Answer: 23.3