## Least Common Multiple & Greatest Common Factor of two of numbers

## Overview:

In this lesson you will learn how to find the Greatest Common Factor & the Least Common Multiple. If you do not understand the steps there is example below.This will be a simple way of understanding

GCF & LCM.

## LCM steps with Example

1. First you will write down your two numbers on a sheet of paper.

Example:

2

4

2. Then you will write about five or so of the numbers that go into your two numbers. (do this to each number for LCM)

Example:

2: 0,1, 2

4: 0, 1, 2, 4

3. If you don't find a lowest number in the five Keep going until you find the lowest number they both go into. (sometimes the lowest number can be one of the two numbers itself )

4. Then when you find your answer circle it or highlight it, this is a good way for your teacher to understand your answer.

Example

2:0, 1, 2

4:0, 1, 2, 4

5. The answer to this problem is 2 because it is the smallest number that goes into both 2 & 4.

Example:

2

4

2. Then you will write about five or so of the numbers that go into your two numbers. (do this to each number for LCM)

Example:

2: 0,1, 2

4: 0, 1, 2, 4

3. If you don't find a lowest number in the five Keep going until you find the lowest number they both go into. (sometimes the lowest number can be one of the two numbers itself )

4. Then when you find your answer circle it or highlight it, this is a good way for your teacher to understand your answer.

Example

2:0, 1, 2

4:0, 1, 2, 4

5. The answer to this problem is 2 because it is the smallest number that goes into both 2 & 4.

GCF steps with Example

1. First you will write down your two numbers on a sheet of paper.Example: 3 4

2.Then writ down about five or so of the multiples that go into your two numbers. ( do this to each number for GCF)

Example:

3: 6, 9, 12, 15, 18 4: 8, 12, 16, 20, 243. If you don't find a highest number in the five Keep going until you find the highest number they both go into. (sometimes the highest number can be one of the two numbers itself )

4. Then when you find your answer circle it or highlight it, this is a good way for your teacher to understand your answer.

Example: 3: 6, 9, 12, 15, 18

4: 8, 12, 16, 20, 24

5. The answer to this problem is 12 because it is the biggest number that goes in to 3 & 4.