Keystones — Lintel
Five GCSE retrieval questions · 17 June 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0036
Answer: 3.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 48°. Find adjacent side
Answer: 24.8cm -
4. Ratio Mixed ratio problems
£203.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £58.00 -
5. Statistics Mean
The mean of 6 numbers is 36. If 5 of them are 48, 22, 19, 26, 21, what is the missing number?
Answer: 80