7th Grade GCD LCM Practice Quizzes, Questions & Answers

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GCD and LCM Fundamentals Basics

GCD And LCM Fundamentals Basics

Want to strengthen your skills with factors and multiples? In this quiz, you’ll practice finding the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of different numbers. You’ll explore prime...

Questions: 20 | Attempts: 10 | Last updated: Nov 7, 2025

Sample Question 1
The GCD of 18 and 24 is:

2

4

6

12

Sample Question 2
The LCM of 6 and 8 is:

12

24

36

48

Sample Question 3
Which is the prime factorization of 60?

2 × 30

5 × 12

2 × 2 × 3 × 5

4 × 15