Keystones — Cornerstone
Five GCSE retrieval questions · 30 March 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 92 + ? = 111
Answer: 19 -
2. Algebra
Solve: 4x + 2 = 3x + 8
Answer: x = 6 -
3. Geometry
Opposite = 10cm, hypotenuse = 20cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 6:12
Answer: 1:2 -
5. Statistics
Calculate the mean of: 15, 28, 47, 36, 10, 25, 18
Answer: 25.6