Keystones — Cornerstone
Five GCSE retrieval questions · 27 April 2024 · mathsvault.uk/keystones
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1. Number
Calculate: -19 + (12) + (-5)
Answer: -12 -
2. Algebra
Factorise: 35x + 15
Answer: 5(7x + 3) -
3. Geometry
Opposite = 13cm, hypotenuse = 15cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 25% of 57
Answer: 14.25 -
5. Statistics
Calculate the mean of: 20, 22, 38, 45, 35, 20
Answer: 30