Advertisement
Advertisement

GCD & LCM Quizzes, Questions & Answers

All Grades

Popular GCD & LCM Topics

GCD Basics
GCD Basics (5)
LCM Basics
LCM Basics (5)
Euclidean Algorithm
Euclidean Algorithm (4)
GCD LCM Practice
GCD LCM Practice (2)
Coprime Numbers
Coprime Numbers (2)

GCD Basics Quizzes


Finding the GCD of Small Numbers

Ready to dive into the world of common factors? In this quiz, you’ll practice finding the greatest common divisor (GCD) of pairs of numbers. From simple fact checks to quick ...

Questions: 10  |   Attempts: 32  |   Last updated: Jan 20, 2026
  • Sample Question
    What is the GCD of 12 and 18?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
Prime Factorization and GCD

Want to see how prime numbers connect to the GCD? In this quiz, you’ll break numbers into prime factors and use those building blocks to find the greatest common divisor. You...

Questions: 10  |   Attempts: 14  |   Last updated: Jan 20, 2026
  • Sample Question
    Find the GCD of 18 and 24 using prime factorization.
    Radio Button
    Radio Button
    Radio Button
    Radio Button
GCD Euclidean Algorithm Quiz: Find the GCD Easily

This quiz takes you into the heart of the Euclidean Algorithm, a simple yet powerful way to find the greatest common divisor of two numbers. You’ll explore how repeated subtr...

Questions: 20  |   Attempts: 12  |   Last updated: Dec 16, 2025
  • Sample Question
    Find GCD(48, 18) using the Euclidean Algorithm.
    Radio Button
    Radio Button
    Radio Button
    Radio Button
All GCD Basics Quizzes

LCM Basics Quizzes


Mixed LCM Challenges

Ready to level up? This quiz mixes basic LCM practice, applications, and trickier problems into one set. You’ll use what you’ve learned to solve both straightforward an...

Questions: 20  |   Attempts: 21  |   Last updated: Jan 19, 2026
  • Sample Question
    LCM of 3 and 4 is:
    Radio Button
    Radio Button
    Radio Button
    Radio Button
Understanding LCM

What happens when two numbers “line up” at the same multiple? That’s where the Least Common Multiple (LCM) comes in! In this quiz, you’ll practice finding t...

Questions: 20  |   Attempts: 16  |   Last updated: Jan 19, 2026
  • Sample Question
    What is the LCM of 3 and 5?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
LCM Practice Quiz: The Ultimate LCM Practice Quiz – Concepts, Problems & Applications

How do you determine the least common multiple efficiently and accurately? In this quiz, you’ll practice finding LCMs using prime factorization, multiples lists, and structur...

Questions: 20  |   Attempts: 13  |   Last updated: Dec 17, 2025
  • Sample Question
    What is the LCM of 3 and 5?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
All LCM Basics Quizzes

Euclidean Algorithm Quizzes


math test-least common multiple

There are two methods that can be confusing for an individual and this is finding the greatest common multiple and the least common multiple. Do you have a strong understanding on ...

Questions: 5  |   Attempts: 4132  |   Last updated: Mar 04, 2025
  • Sample Question
    What is 5 and 15
    Radio Button
    Radio Button
    Radio Button
    Radio Button
LL CSET 110 - Number Theory MC

This quiz titled 'LL CSET 110 - Number Theory MC' tests knowledge on the Euclidean Algorithm, number simplification, and properties of numbers formed from primes.

Questions: 15  |   Attempts: 146  |   Last updated: Oct 23, 2025
  • Sample Question
    5,078 = 150(33)+128 is the first step in finding the greatest common divisor of two numbers. Which of the following is the next step in the Euclidian Algorithm?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
Euclidean Algorithm Basics

Ever wondered how to quickly find the greatest common divisor (GCD) of two numbers? The Euclidean Algorithm is the oldest (and still one of the fastest!) ways to do it. In this qui...

Questions: 12  |   Attempts: 11  |   Last updated: Jan 19, 2026
  • Sample Question
    Find GCD(48, 18) using the Euclidean Algorithm.
    Radio Button
    Radio Button
    Radio Button
    Radio Button
All Euclidean Algorithm Quizzes

GCD LCM Practice Quizzes


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 differen...

Questions: 20  |   Attempts: 24  |   Last updated: Jan 20, 2026
  • Sample Question
    The GCD of 18 and 24 is:
    Radio Button
    Radio Button
    Radio Button
    Radio Button
Algebraic Extensions of GCD and LCM

Ready to take GCD and LCM into algebra? In this quiz, you’ll solve equations that connect GCD and LCM to variables, test which values work, and discover how number properties...

Questions: 20  |   Attempts: 11  |   Last updated: Jan 20, 2026
  • Sample Question
    If GCD(2x, 6) = 2, what is the smallest integer value of x?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
All GCD LCM Practice Quizzes

Coprime Numbers Quizzes


Identifying and Applying Coprime Numbers

Did you know two numbers don’t have to be prime to be coprime? In this quiz, you’ll explore pairs of numbers that share no factors except 1, test real examples, and con...

Questions: 20  |   Attempts: 14  |   Last updated: Jan 20, 2026
  • Sample Question
    Which of the following pairs is coprime?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
Coprime Numbers in Algebraic Contexts

Once you know how to spot coprime numbers, it’s time to use them in equations. In this quiz, you’ll solve problems where GCD rules help determine possible values of var...

Questions: 20  |   Attempts: 10  |   Last updated: Jan 20, 2026
  • Sample Question
    If GCD(12, x) = 1, which x values make (12, x) coprime?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
All Coprime Numbers Quizzes

Top Trending GCD & LCM Quizzes

HCF and LCM Quiz Questions For Class 5

Try out these HCF and LCM quiz questions created for class 5th students. When it comes to finding the least common multiple, there are some rules that you are expected to follow to reach the correct answer. Do you believe you...

Questions: 10  |  Attempts: 12678   |  Last updated: Oct 22, 2025
  • Sample Question
    The common factor between the numerator and denominator of  6/15  is  ______
    Radio Button
    Radio Button
    Radio Button
    Radio Button
Mathematics JSS 1 Lagos State Ministry Of Education (Edvi)

This Mathematics quiz is designed for JSS 1 students under the Lagos State Ministry of Education curriculum. It assesses skills in finding HCF, LCM, performing arithmetic operations, and understanding multiples, enhancing...

Questions: 41  |  Attempts: 4000   |  Last updated: Aug 7, 2025
  • Sample Question
    Find the HCF of 9, 15, and 24. 
    Radio Button
    Radio Button
    Radio Button
    Radio Button
Shortcut Of LCM and HCF Quiz

LCM and HCF are concepts useful in mathematics as well as in determining the time and distance, pipes and cisterns and so on. There are many shortcuts and tricks in analyzing the concepts problems which requires some principles...

Questions: 10  |  Attempts: 792   |  Last updated: Mar 20, 2025
  • Sample Question
    What is the least common multiple of 3 and 4?
    Radio Button
    Radio Button
    Radio Button
    Radio Button
A Not So Easy Aptitude and Reasoning Quiz!

Challenge your logical thinking and problem-solving skills with 'A Not So Easy Aptitude and Reasoning Quiz!' This quiz tests your grasp of mathematical concepts, including H.C.F, L.C.M, and co-primes, alongside practical problems...

Questions: 50  |  Attempts: 322   |  Last updated: Mar 22, 2025
  • Sample Question
    The H.C.F. of 2² × 3³ × 5⁵, 2³ × 3² × 5² × 7 and 2⁴ × 3⁴ × 5 × 7² × 11 is
    Radio Button
    Radio Button
    Radio Button
    Radio Button

Recent GCD & LCM Quizzes

Advertisement