Keystones — Cornerstone
Five GCSE retrieval questions · 13 January 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 545 + 643
Answer: 545 + 643 = 1188 -
2. Algebra
Solve: x + 6 = 17
Answer: x = 11 -
3. Geometry
Opposite = 15cm, hypotenuse = 30cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify the ratio 25:15
Answer: 5:3 -
5. Statistics
Find the mean of: 8, 5, 18, 19
Answer: 12.5