Greatest Common Factor and Least Common Multiple

Math ⇒ Number and Operations

Greatest Common Factor and Least Common Multiple starts at 6 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Greatest Common Factor and Least Common Multiple. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 6

Explain the difference between GCF and LCM.

Find the GCF of 16, 24, and 40.

Find the GCF of 27 and 36.

Find the GCF of 36 and 48.

Find the GCF of 42 and 56.

Find the GCF of 45, 60, and 75.

Find the GCF of 50 and 75.

Find the LCM of 15 and 18.

Find the LCM of 3, 4, and 6.

Find the LCM of 5, 10, and 15.

Find the LCM of 6, 8, and 9.

Find the LCM of 7, 14, and 21.

Find the LCM of 8 and 14.

Find the LCM of 9 and 15.

If the GCF of two numbers is 1, what are these numbers called?

If the GCF of two numbers is 1, what is their LCM in terms of the two numbers?

If the GCF of two numbers is 4 and their LCM is 60, what could the two numbers be?

If the GCF of two numbers is 8 and their product is 320, what is their LCM?

If two numbers have no common factors other than 1, what is their GCF?

What is the greatest common factor (GCF) of 18 and 24?