Keystones — Cornerstone
Five GCSE retrieval questions · 6 August 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 91 + 79
Answer: 91 + 79 = 170 -
2. Algebra
Solve: x + 4 = 13
Answer: x = 9 -
3. Geometry
Opposite = 6cm, hypotenuse = 8.5cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 6:8:6
Answer: 3:4:3 -
5. Statistics
Calculate the mean of: 48, 13, 50, 9, 9, 7, 49
Answer: 26.4