Keystones Lintel — 16 April 2018

Keystones — Lintel

Five GCSE retrieval questions · 16 April 2018 · mathsvault.uk/keystones

1. Number Converting to standard form

16000000

Answer: 1.6 × 10⁷
2. Algebra Factorising monic quadratics

Factorise: x² - 10x + 24

Answer: (x - 6)(x - 4)
3. Geometry SOHCAHTOA — missing length

Adjacent = 18cm, angle = 47°. Find opposite

Answer: 19.3cm
4. Ratio Mixed ratio problems

Simplify: 6:15:18

Answer: 2:5:6
5. Statistics Mean

Calculate the mean of: 18, 21, 39, 38, 49, 31

Answer: 32.7

Same five questions for everyone on Lintel on this date. Sets are stored as JSON for reliable print-on-demand — sign in for school-branded PDFs.