Keystones — Capstone

Five GCSE retrieval questions · 24 December 2022 · mathsvault.uk/keystones

1. Number

Calculate: 997 + 856

Answer: 1853
2. Algebra

Solve: ^x⁄₄ = 2.75

Answer: x = 11
3. Geometry

Adjacent = 21cm, hypotenuse = 36cm. Find the angle

Answer: 54.3°
4. Ratio

Calculate 12.3% of 844

Answer: 103.81
5. Statistics

The mean of 6 numbers is 23. If 5 of them are 26, 49, 34, 30, 26, what is the missing number?

Answer: -27

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