Keystones — Cornerstone
Five GCSE retrieval questions · 8 February 2024 · mathsvault.uk/keystones
-
1. Number
Calculate: 815 + 831
Answer: 815 + 831 = 1646 -
2. Algebra
Factorise: 6x + 14
Answer: 2(3x + 7) -
3. Geometry
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio
Simplify: 9:15:12
Answer: 3:5:4 -
5. Statistics
Calculate the mean of: 45, 39, 50, 47, 27, 27, 40, 11
Answer: 35.8