Keystones — Cornerstone
Five GCSE retrieval questions · 25 September 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 72 + 61
Answer: 72 + 61 = 133 -
2. Algebra
Solve: 7x = 28
Answer: x = 4 -
3. Geometry
Opposite = 8cm, hypotenuse = 11.3cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 6:10:6
Answer: 3:5:3 -
5. Statistics
Calculate the mean of: 44, 5, 25, 31, 49, 12, 29
Answer: 27.9