Keystones — Cornerstone
Five GCSE retrieval questions · 23 January 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 72 + 79
Answer: 72 + 79 = 151 -
2. Algebra
Collect like terms: 7x + 5y + 6x + 7y
Answer: 13x + 12y -
3. Geometry
Opposite = 13cm, hypotenuse = 26cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Simplify: 12:18:15
Answer: 4:6:5 -
5. Statistics
Calculate the mean of: 47, 47, 19, 30, 39, 10, 23
Answer: 30.7