Keystones — Cornerstone
Five GCSE retrieval questions · 24 March 2021 · mathsvault.uk/keystones
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1. Number
Calculate: -31 + (12)
Answer: -19 -
2. Algebra
Solve: x + 7 = 21
Answer: x = 14 -
3. Geometry
Opposite = 9cm, hypotenuse = 10.4cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 24:24:16
Answer: 3:3:2 -
5. Statistics
Calculate the range of: 40, 98, 117, 81, 67, 55
Answer: 77