Keystones — Cornerstone
Five GCSE retrieval questions · 4 March 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 21 + 78
Answer: 21 + 78 = 99 -
2. Algebra
Solve: 3x = 15
Answer: x = 5 -
3. Geometry
Opposite = 17cm, adjacent = 8cm. Calculate the angle
Answer: 64.8° -
4. Ratio
Simplify the ratio 15:6
Answer: 5:2 -
5. Statistics
Calculate the mean of: 41, 30, 10, 22, 37, 20
Answer: 26.7