Keystones — Lintel
Five GCSE retrieval questions · 17 January 2018 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 80,000 in standard form
Answer: 8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 40
Answer: (x + 8)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 37°. Find opposite. Give your answer to 2 decimal places
Answer: 7.54cm -
4. Ratio Mixed ratio problems
Simplify: 24:24:16
Answer: 3:3:2 -
5. Statistics Mean
Calculate the mean of: 12, 29, 35, 45, 50, 40. Give your answer to 2 decimal places
Answer: 35.17