Keystones — Lintel
Five GCSE retrieval questions · 6 August 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0056
Answer: 5.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 32
Answer: (x + 8)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 37°. Find adjacent side
Answer: 28.8cm -
4. Ratio Mixed ratio problems
Divide 180 in the ratio 3:2:1
Answer: 90, 60 and 30 -
5. Statistics Mean
The mean of 5 numbers is 27. If 4 of them are 38, 34, 27, 43, what is the missing number?
Answer: -7