Keystones — Cornerstone
Five GCSE retrieval questions · 31 March 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 48 + 67
Answer: 48 + 67 = 115 -
2. Algebra
Solve: x + 8 = 15
Answer: x = 7 -
3. Geometry
Opposite = 15cm, hypotenuse = 17.3cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 12:8:16
Answer: 3:2:4 -
5. Statistics
Calculate the mean of: 29, 31, 44, 25, 11, 10, 34, 5
Answer: 23.6