Keystones — Capstone
Five GCSE retrieval questions · 12 August 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄2 + 1⁄2 + 2⁄4
Answer: 3⁄2 -
2. Algebra
Expand: 8(5x - 12)
Answer: 40x - 96 -
3. Geometry
Adjacent = 23cm, hypotenuse = 38cm. Find the angle
Answer: 52.8° -
4. Ratio
Calculate 19.6% of 351
Answer: 68.8 -
5. Statistics
The mean of 5 numbers is 23. If 4 of them are 24, 36, 26, 39, what is the missing number?
Answer: -10