Keystones — Lintel

Five GCSE retrieval questions · 13 July 2023 · mathsvault.uk/keystones

1. Number

The sum of three consecutive numbers is 111. What are the numbers?

Answer: 36, 37, and 38
2. Algebra

Solve: ^x⁄₇ = 3.7142857142857

Answer: x = 26
3. Geometry

Opposite = 8cm, adjacent = 20cm. Calculate the angle

Answer: 21.8°
4. Ratio

Simplify: 10:8:10

Answer: 5:4:5
5. Statistics

Find the range of: -10, 38, -10, -12, 21

Answer: 50

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