Keystones Lintel — 4 March 2021

Keystones — Lintel

Five GCSE retrieval questions · 4 March 2021 · mathsvault.uk/keystones

1. Number Converting to standard form

97000000

Answer: 9.7 × 10⁷
2. Algebra Factorising monic quadratics

Factorise: x² + x - 6

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

Hypotenuse = 29cm, angle = 54°. Find adjacent side

Answer: 17cm
4. Ratio Mixed ratio problems

Simplify: 8:8:6

Answer: 4:4:3
5. Statistics Mean

Calculate the mean of: 26, 12, 33, 43, 38, 11

Answer: 27.2

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