## 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.

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 =

8 + 1 =

2 + 7 =

4 + 4 =

### Practice Question 5

3 + 10 =

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