GCF & LCM

Front

What does GCF stand for?

Back

GCF stands for Greatest Common Factor, which is the largest number that divides two or more numbers without leaving a remainder.

Front

What does LCM stand for?

Back

LCM stands for Least Common Multiple, which is the smallest number that is a multiple of two or more numbers.

Front

How do you find the GCF of two numbers?

Back

To find the GCF, list the factors of each number and identify the largest factor they have in common.

Front

How do you find the LCM of two numbers?

Back

To find the LCM, list the multiples of each number and identify the smallest multiple they have in common.

Front

What is the GCF of 15 and 25?

Back

The GCF of 15 and 25 is 5.

Front

What is the LCM of 3 and 4?

Back

The LCM of 3 and 4 is 12.

Front

Is 21 a multiple of 7?

Back

Yes, 21 is a multiple of 7 (7 x 3 = 21).

Front

Which of the following is a factor of 12: 2, 5, 7, or 9?

Back

2 is a factor of 12.

Front

What is the GCF of 8 and 12?

Back

The GCF of 8 and 12 is 4.

Front

What is the LCM of 5 and 10?

Back

The LCM of 5 and 10 is 10.