Keystones — Lintel
Five GCSE retrieval questions · 21 March 2022 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Factorise: 3x² + 5x
Answer: x(3x + 5) -
3. Geometry
Adjacent = 27cm, hypotenuse = 47cm. Find the angle
Answer: 54.9° -
4. Ratio
Simplify: 8:8:6
Answer: 4:4:3 -
5. Statistics
A bag has 3 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 3⁄11