Keystones — Cornerstone
Five GCSE retrieval questions · 2 April 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 81 + 59
Answer: 81 + 59 = 140 -
2. Algebra
Solve: 9x - 8 = 3x + 22
Answer: x = 5 -
3. Geometry
Opposite = 6cm, hypotenuse = 6.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 6:12:15
Answer: 2:4:5 -
5. Statistics
Find the mean of: 20, 18, 20, 20
Answer: 19.5