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Addition Using Number Lines


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Overview

When you add groups of objects together, you can find how many there are in all.

You can add large or small numbers together.

You can use a NUMBER LINE to help you add.

We can use the number line above to help us.

We will solve the problem 5 + 7 by starting on the number 5. Then we will jump ahead 7 places to find the SUM.

5… 6, 7, 8, 9, 10, 11, 12!

5 + 7 = 12

Here’s another example.

We can use the number line above to help us.

We will solve the problem 3 + 6 by starting on the number 3. Then we will jump ahead 6 places to find the SUM.

3… 4, 5, 6, 7, 8, 9!

3 + 6 = 9

 

Let’s try a few more! Use the number line to solve each problem.

 

5 + 4 =

5… 6, 7, 8, 9!

5 + 4 = 9

 

3 + 2 = 

3… 4, 5!

3 + 2 = 5

 

4 + 9 =

4… 5, 6, 7, 8, 9, 10, 11, 12, 13!

4 + 9 = 13

 

8 + 7 =

8… 9, 10, 11, 12, 13, 14, 15!

8 + 7 = 15

Number lines are a great math tool! There are many additional strategies you can use to help you add correctly. We will learn about these in other lessons.

Practice Question 1

Let’s practice! Use the number line to add.
4 + 10 =

Practice Question 2

8 + 1 =

Practice Question 3

2 + 7 =

Practice Question 4

4 + 4 =

Practice Question 5

3 + 10 =

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Use the number line to help add and find the correct sum!
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