Keystones — Capstone
Five GCSE retrieval questions · 17 January 2022 · mathsvault.uk/keystones
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1. Number
Simplify: y2 × y2 × y4
Answer: y8 -
2. Algebra
Factorise fully: 20x² + 8x
Answer: 4x(5x + 2) -
3. Geometry
Adjacent = 30cm, hypotenuse = 41cm. Find the angle
Answer: 43° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 37. If 3 of them are 38, 16, 28, what is the missing number?
Answer: 66