Keystones Lintel — 8 August 2022

Keystones — Lintel

Five GCSE retrieval questions · 8 August 2022 · mathsvault.uk/keystones

1. Number Converting to standard form

8000000

Answer: 8 × 10⁶
2. Algebra Factorising monic quadratics

Factorise: x² - 9x + 14

Answer: (x - 2)(x - 7)
3. Geometry SOHCAHTOA — missing length

Adjacent = 30cm, angle = 35°. Find opposite

Answer: 21cm
4. Ratio Mixed ratio problems

Divide 154 in the ratio 2:2:3

Answer: 44, 44 and 66
5. Statistics Mean

Calculate the mean of: 19, 46, 12, 34, 10, 27

Answer: 24.7

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