Keystones — Cornerstone
Five GCSE retrieval questions · 18 February 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 55 + 71
Answer: 55 + 71 = 126 -
2. Algebra
Solve: x + 7 = 25
Answer: x = 18 -
3. Geometry
Opposite = 13cm, hypotenuse = 15cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 10% of 184
Answer: 18.4 -
5. Statistics
Calculate the mean of: 30, 20, 38, 14, 20, 28, 47
Answer: 28.1