Keystones Lintel — 9 January 2013

Keystones — Lintel

Five GCSE retrieval questions · 9 January 2013 · mathsvault.uk/keystones

1. Number Converting to standard form

Write 2,100,000 in standard form

Answer: 2.1 × 10⁶
2. Algebra Factorising monic quadratics

Factorise: x² - 18x + 80

Answer: (x - 8)(x - 10)
3. Geometry SOHCAHTOA — missing length

Hypotenuse = 38cm, angle = 51°. Find adjacent side. Give your answer to 2 decimal places

Answer: 23.91cm
4. Ratio Mixed ratio problems

Simplify: 15:6:15

Answer: 5:2:5
5. Statistics Mean

Calculate the mean of: 8, 10, 46, 26, 37, 14

Answer: 23.5

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.