Keystones — Cornerstone
Five GCSE retrieval questions · 13 December 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 2.7 + 6.1
Answer: 2.7 + 6.1 = 8.8 -
2. Algebra
Solve: x + 9 = 21
Answer: x = 12 -
3. Geometry
Opposite = 14cm, hypotenuse = 16.2cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 4:10:8
Answer: 2:5:4 -
5. Statistics
Find the mean of: 12, 4, 15, 8
Answer: 9.75