1-7 Solving Equations by Multiplying &

DividingAim: How can we write and solve equations

using multiplication and division?

CCSS: 6.EE.7

Warm Up

Vocabulary Review:

Inverse operations are operations that ________ each other.

Simplify each expression.

1. 6 ∙ 4

2. -7 ∙ 3

3.

The Multiplication Property of Equality

If you multiply each side of an equation by the same number, the two sides remain equal.

The Division Property of Equality

If you divide each side of an equation by the same nonzero number, the two sides remain equal.

Solving by Multiplying

1. Solve

2. Solve

Solving by Dividing

1. Solve

2. Solve

More Than One WayOne out of every five people attending a town rock concert came to support the local high school band. The band had 112 supporters. How many people were in the audience?

Daryl’s Method:

I see that 112 supporters equal one out of five audience members. I know there are five groups of 112 people in the audience.

So, there are 5 ∙ 112, or 560 audience members.

Tina’s Method:

I can represent the number of people in the audience as p. The number of supporters is p divided by 5. I can write the equation as and solve for p.

So, there are 560 people in the audience.

Think, Turn & Talk1. Vocabulary: When is a value a solution to an equation?

Which property of equality does each equation represent?

2. 3.

4. 4.

Mental Math: For each equation, find whether -5 is a solution.

6. 7. 8.

9. 10. 11.

Activity Lab: The Cover-Up Method

1. Solve

2. Solve .

3. Solve

4. Solve

Exit Ticket

Solve each equation.