Multiplying Integers

Multiplying Integers

Objective- I can use a number line and mathematical properties to multiply integers.

All information will come from Module 3, Lesson 3 in your textbook. You will also need to watch all videos in the slides. It is important!

Take-aways

Multiplying numbers is the same as adding the number multiple times.

Whenever you are multiplying different signs, you will get a negative answer.

Last, a number line can be helpful with getting a visual to which side the answer is going to be on.

Multiple Choice

What is multiplication?

• The addition of a number multiple times.

• The subtraction of a number multiple times.

• Multiplying a number multiple times.

• Dividing a number multiple times.

Multiple Select

Which number will have a negative answer?

• 7(9)

• 9(-8)

• -8(15)

• -9(5)

Open Ended

How would you solve -2(5) using algebra tiles? You need to explain how you would use the algebra tiles to solve your answer.

Multiple Choice

If the signs are different when multiplying, you will get a ?

• positive number

• negative number

Open Ended

Why is the number negative 90 in the problem?

Open Ended

If the answer was positive for this problem, what would the word problems solution look like? What does the solution actually mean for the submarine? (think about the whale problem we did)

Poll

How do you feel about solving Integers with multiplication?

• Great!

• So-So!

• Terrible!