GCF and LCM Review

Front

What is the greatest common factor (GCF)?

Back

The greatest common factor (GCF) is the largest positive integer that divides all the given numbers without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

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

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more numbers.

Front

How do you find the LCM of two numbers?

Back

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

Front

What is the GCF of 15 and 36?

Back

3

Front

Lisa has 32 white roses, 24 pink roses, and 16 bunches of babies breath. What is the greatest number of arrangements she can make?

Back

8 arrangements.

Front

You have 18 red legos and 24 green legos. What is the greatest number of groups you can make?

Back

6 groups.

Front

What is the least number of pencils and highlighters you need to buy for an equal amount if pencils come in packs of 8 and highlighters in packs of 12?

Back

24.

Front

What is the GCF of 28, 70, and 42?

Back

14.

Front

If the GCF of two numbers is 1, what does that indicate about the numbers?

Back

It indicates that the two numbers are coprime, meaning they have no common factors other than 1.