Keystones — Lintel
Five GCSE retrieval questions · 30 May 2016 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 92,000 in standard form
Answer: 9.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 66
Answer: (x + 11)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 54°. Find opposite. Give your answer to 2 decimal places
Answer: 15.14cm -
4. Ratio Mixed ratio problems
Divide 162 in the ratio 2:1:3
Answer: 54, 27 and 81 -
5. Statistics Mean
The mean of 6 numbers is 32. If 5 of them are 40, 34, 44, 18, 18, what is the missing number?
Answer: 38