Keystones — Cornerstone
Five GCSE retrieval questions · 14 February 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 89 + 68
Answer: 89 + 68 = 157 -
2. Algebra
Solve: 7x = 21
Answer: x = 3 -
3. Geometry
Opposite = 13cm, adjacent = 18cm. Calculate the angle
Answer: 35.8° -
4. Ratio
Calculate 50% of 71
Answer: 35.5 -
5. Statistics
Calculate the mean of: 41, 35, 19, 30, 28, 32, 38
Answer: 31.9