Keystones — Cornerstone
Five GCSE retrieval questions · 23 July 2022 · mathsvault.uk/keystones
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1. Number
Calculate: -17 + (8) + (-12)
Answer: -21 -
2. Algebra
Solve: 8x = 32
Answer: x = 4 -
3. Geometry
Opposite = 7cm, hypotenuse = 14cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 15:30
Answer: 1:2 -
5. Statistics
Find the mean of: 12, 11, 4, 6, 11
Answer: 8.8