Adding Integers Using a Number Line

This lesson teaches how to add integers using a number line. It begins with adding a positive integer to a negative integer, demonstrating the process of counting to the right. Then, it covers adding two negative integers by counting to the left. Another example shows adding a negative integer to a positive integer. The lesson emphasizes the importance of direction when adding positive or negative numbers. By the end, students will understand how to represent integer addition on a number line.

When adding a positive number to a negative number on a number line, in which direction do you move?

• Downwards

• Upwards

• To the right

• To the left

What is the result of adding negative 6 and negative 3 on a number line?

• Negative 3

• Positive 3

• Negative 9

• Zero

When adding a negative number to another negative number, which direction should you move on the number line?

• To the right

• Downwards

• Upwards

• To the left

In the example of 15 plus negative 8, what is the final result?

• Zero

• 23

• 7

• Negative 7

What is the key takeaway when adding integers on a number line?

• Move right for positive and left for negative addends

• Always move to the left

• Always move to the right

• Move left for positive and right for negative addends