Keystones — Lintel
Five GCSE retrieval questions · 10 July 2016 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.000056 in standard form
Answer: 5.6 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 8
Answer: (x + 8)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places
Answer: 7.51cm -
4. Ratio Mixed ratio problems
Divide 100 in the ratio 1:1:2
Answer: 25, 25 and 50 -
5. Statistics Mean
Calculate the mean of: 14, 18, 49, 11, 29, 16, 6. Give your answer to 2 decimal places
Answer: 20.43