Keystones — Lintel

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

1. Number

98000000

Answer: 9.8 × 10⁷
2. Algebra

Solve: 8x = 120

Answer: x = 15
3. Geometry

Adjacent = 27cm, hypotenuse = 40cm. Find the angle

Answer: 47.5°
4. Ratio

Simplify: 9:15:9

Answer: 3:5:3
5. Statistics

Find the range of: -20, 38, 10, 34, -24

Answer: 62

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