Keystones — Lintel

Five GCSE retrieval questions · 13 February 2022 · mathsvault.uk/keystones

1. Number

The sum of three consecutive numbers is 138. What are the numbers?

Answer: 45, 46, and 47
2. Algebra

Solve: ^x⁄₇ = 2.8571428571429

Answer: x = 20
3. Geometry

Adjacent = 27cm, hypotenuse = 32cm. Find the angle

Answer: 32.5°
4. Ratio

Simplify: 15:18:12

Answer: 5:6:4
5. Statistics

Calculate the mean of: 45, 37, 36, 32, 13, 20

Answer: 30.5

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