equations and hanger diagrams

equations and hanger diagrams

Let's practice using hanger diagrams to identify equations.

Poll

What does the first side need to equal in order to balance this diagram?

• 11

• 8

• 3

Multiple Choice

Yes, 8! In an equation one side must equal the other.

If we add, what will the equation look like?

• x + 3 = 8

• 8 + 3 = x

Poll

How do we figure out how much x is worth?

• add 3 to 8

• subtract 3 from 8

Poll

Yes, we subtract 3 from 8.

So what does x equal?

• 11

• 5

Poll

Let's do another one.

This time we have a variable.

What is the variable in this diagram?

• x

• 12

• y

Poll

Yes, y is the variable. Since we have it 2 times how would we write the the right side of the diagram?

• y - y

• 2y

Poll

Yes, 2y.

So, how shall we write the equation?

• 12 = 2 + y

• 12 = 2y

Poll

If 12 = 2y, what operation do we use to solve the equation?

• multiply

• divide

Poll

Yes, we divide 12 by 2.

What is y equal to?

• 6

• 2

Multiple Choice

Now you try. What equation does this diagram represent?

• 5 + m = 50

• 5m = 50

Multiple Choice

Correct 5m = 50.

How will you solve for m?

• divide 50 by 5

• multiply 50 by 5

Open Ended

Yes, divide!

What does m equal?