Keystones — Lintel
Five GCSE retrieval questions · 16 December 2019 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.057
Answer: 5.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 52°. Find adjacent side
Answer: 13.5cm -
4. Ratio Mixed ratio problems
£369.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £205.00 -
5. Statistics Mean
The mean of 5 numbers is 33. If 4 of them are 30, 47, 47, 41, what is the missing number?
Answer: 0