Keystones — Cornerstone
Five GCSE retrieval questions · 11 July 2022 · mathsvault.uk/keystones
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1. Number
Calculate: -10 + (20) + (-2)
Answer: 8 -
2. Algebra
Solve: 7x = 98
Answer: x = 14 -
3. Geometry
Opposite = 11cm, hypotenuse = 22cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 8:12:16
Answer: 2:3:4 -
5. Statistics
Find the mean of: 19, 13, 6, 15, 16
Answer: 13.8