Keystones Lintel — 15 October 2021

Keystones — Lintel

Five GCSE retrieval questions · 15 October 2021 · mathsvault.uk/keystones

1. Number

Add: ⁷⁄₈ + ⁴⁄₇

Answer: ⁸¹⁄₅₆
2. Algebra

Factorise fully: 10x² + 35x

Answer: 5x(2x + 7)
3. Geometry

Adjacent = 12cm, hypotenuse = 25cm. Find the angle

Answer: 61.3°
4. Ratio

Simplify: 18:15:12

Answer: 6:5:4
5. Statistics

Find the range of: -11, -6, 41, 8, 24

Answer: 52

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