Keystones — Lintel
Five GCSE retrieval questions · 20 September 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 138. What are the numbers?
Answer: 45, 46, and 47 -
2. Algebra
Solve: 8x + 10 = 3x - 4
Answer: x = 2.8 -
3. Geometry
Adjacent = 19cm, hypotenuse = 27cm. Find the angle
Answer: 45.3° -
4. Ratio
Find 21% of 475
Answer: 99.75 -
5. Statistics
A bag has 7 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 7⁄13