Keystones — Lintel
Five GCSE retrieval questions · 24 April 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 135. What are the numbers?
Answer: 44, 45, and 46 -
2. Algebra
Solve: 2x = 30
Answer: x = 15 -
3. Geometry
Calculate the hypotenuse when a = 6cm and b = 14cm
Answer: 15.23cm -
4. Ratio
Find 21% of 319
Answer: 66.99 -
5. Statistics
A bag has 6 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 2⁄3