LCM and GCF Review

Front

What is the GCF (Greatest Common Factor)?

Back

The GCF of two or more numbers is the largest number that divides all of them without leaving a remainder.

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

Find the GCF of 32 and 40.

Back

8

Front

Find the GCF of 15 and 36.

Back

3

Front

What is the LCM (Least Common Multiple)?

Back

The LCM of two or more numbers is the smallest number that is a multiple of all of them.

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 LCM of 9 and 45?

Back

45

Front

Which list contains multiples of 9?

Back

9, 18, 27, 36, 45, 54, 63

Front

What is a composite number?

Back

A composite number is a whole number greater than 1 that has more than two factors.

Front

Which number is a composite number: 17, 51, 29, 67?

Back

51