Keystones — Lintel
Five GCSE retrieval questions · 20 August 2018 · mathsvault.uk/keystones
-
1. Number Converting to standard form
4600000
Answer: 4.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 58°. Find opposite
Answer: 35.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 28. If 4 of them are 41, 22, 46, 21, what is the missing number?
Answer: 10