Keystones — Cornerstone
Five GCSE retrieval questions · 31 January 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 87 + 40
Answer: 87 + 40 = 127 -
2. Algebra
Solve: x + 7 = 16
Answer: x = 9 -
3. Geometry
Opposite = 9cm, hypotenuse = 18cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 10% of 89
Answer: 8.9 -
5. Statistics
Find the mean of: 13, 20, 20, 4, 18
Answer: 15