Solving One-Step Equations

Solving One-Step Equations

Addition and Subtraction

Fill in the Blank

Write an expression for the number of blocks in the left-side pan.

Do not put spaces in your answer.

Fill in the Blank

Write an expression for the number of blocks in the right-side pan.

Do not put spaces in your answer.

Fill in the Blank

Since the pans are balanced, you know the expressions are equivalent. Write an equation to show this.

Do not put spaces in your answer.

Multiple Choice

What is the operation in the expression x - 3?

• addition

• subtraction

• multiplication

• division

Multiple Choice

What is the inverse operation for the expression x - 3?

• addition

• subtraction

• multiplication

• division

Multiple Choice

How can you isolate the variable in x - 3 = 7?

• add 3 to the left side

• subtract 3 from the left side

• add 7 to the left side

• subtract 7 from the left side

Multiple Choice

When you isolate the variable, what must you do to keep the equation balanced?

x - 3 = 7

• Add 3 to 7

• Subtract 3 from 7

• Add 7 to x

• Subtract 7 from x

Multiple Choice

Fill in the blank (the same thing goes in both blanks)

x−3=7

Step 1: x - 3 ___ = 7 ___

• + 3

• - 3

• + 7

• - 7

Multiple Choice

Fill in the blank (the same thing goes in both blanks)

x−3=7

Step 1: x - 3 +3 = 7 +3

Step 2: x = _____

• 10

• 4

• 14

• 0

Fill in the Blank

Solve x + 5 = 15

Remember to practice writing out the steps even if it is easy.

x = _____

Fill in the Blank

Solve x - 9 = 8

Remember to practice writing out the steps even if it is easy.

x = _____