Keystones — Lintel

Five GCSE retrieval questions · 7 October 2022 · mathsvault.uk/keystones

1. Number

What is 8.5 + 9.4 + 0.52?

Answer: 8.5 + 9.4 + 0.52 = 18.42
2. Algebra

Solve: ^x⁄₄ = 3.5

Answer: x = 14
3. Geometry

Calculate the area of a circle with diameter 10cm

Answer: 78.54cm²
4. Ratio

Simplify: 4:12:6

Answer: 2:6:3
5. Statistics

Find the range of: -16, 50, -3, 29, 23

Answer: 66

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