Keystones — Capstone
Five GCSE retrieval questions · 20 August 2023 · mathsvault.uk/keystones
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1. Number
Calculate: (-19) + (-29) + (-16)
Answer: -64 -
2. Algebra
Factorise fully: 28x² + 8x
Answer: 4x(7x + 2) -
3. Geometry
Adjacent = 19cm, hypotenuse = 28cm. Find the angle
Answer: 47.3° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 21. If 3 of them are 21, 29, 22, what is the missing number?
Answer: 12