Keystones — Cornerstone
Five GCSE retrieval questions · 23 October 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 72 + 57
Answer: 72 + 57 = 129 -
2. Algebra
Simplify: 8x + 5x
Answer: 13x -
3. Geometry
Calculate the perimeter of a right triangle with sides 12cm and 5cm
Answer: 30cm -
4. Ratio
Calculate 50% of 152
Answer: 76 -
5. Statistics
Calculate the mean of: 35, 18, 41, 39, 15, 18, 37
Answer: 29