Keystones — Lintel
Five GCSE retrieval questions · 7 April 2023 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Solve: 7x = 21
Answer: x = 3 -
3. Geometry
Calculate the hypotenuse when a = 7cm and b = 9cm
Answer: 11.4cm -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
A bag has 6 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 6⁄11