Keystones — Cornerstone
Five GCSE retrieval questions · 8 November 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 151 + 437
Answer: 151 + 437 = 588 -
2. Algebra
Solve: 7x = 42
Answer: x = 6 -
3. Geometry
Find the perimeter of a right triangle with sides 5cm, 12cm, 13cm
Answer: 30cm -
4. Ratio
Calculate 50% of 66
Answer: 33 -
5. Statistics
Calculate the mean of: 20, 33, 15, 7, 22, 20, 40, 29
Answer: 23.3