Keystones — Cornerstone
Five GCSE retrieval questions · 31 August 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 231 + 164
Answer: 231 + 164 = 395 -
2. Algebra
Solve: 3x = 12
Answer: x = 4 -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 12:6:15
Answer: 4:2:5 -
5. Statistics
Calculate the mean of: 47, 24, 11, 50, 22, 45, 39
Answer: 34