Lesson 1.4 Subtracting Integers

Lesson 1.4
Subtracting Integers

​Goal Today:

​In this lesson, we are going to learn how to subtract integers. We will use what we know about opposite integers to change subtraction problems to addition problems.

​How to subtract integers:

To subtract integers, we need to create an addition problem.
Step 1: Keep the first number the same
Step 2: Change the subtraction to addition
Step 3: Change the second number with its opposite
Step 4: Follow addition rules

Ex: 4 - 8​

​Ex: Perform the subtraction 6 - 10

Multiple Choice

Perform the subtraction:

-6 - (-8)

• 2

• -2

• 14

• -14

Multiple Choice

Perform the subtraction:

-9 - 7

• 16

• -16

• 2

• -2

​How to show subtraction on a number line:
5 - 9

Draw

Show 4 - 7 on a number line:

​Conclusion: Write 2 complete sentences about what you learned.

​I learned when subtracting integers, I need to _____, _____ subtraction to addition, and change the last number with _____.
Once I have used keep change change, I follow the ____ rules.