One Step Equations with Addition

One Step Equations with Addition

What is an equation?

An equation is like a scale with 2 sides. Both sides must be BALANCED because they are EQUAL.

Multiple Choice

In an equation, both sides must be...

• equal

• balanced

• both of these

KEEP IT BALANCED

• Equations have 2 sides

• If you change one side, you must change the other

• Sides of the equation are equal

Multiple Choice

What would you have to do so the sides are balanced

• give the man on left a cookie

• give both men 2 cookies

How to Solve for X

• Do the inverse opposite to both sides

• The OPPOSITE of +7 is -7

• SO, subtract 7 from both sides

Fill in the Blanks

If you subtract 7 from one side, you need to

7 from the other side

INVERSE OPERATIONS

• THE Opposite of addition is subtraction

• You must do the inverse (opposite) to solve for x

Multiple Choice

What is the inverse (opposite of addition)?

• multiplication

• subtraction

• addition

DO THE OPPOSITE

The opposite of adding 25 is subtracting 25.

Do the opposite to BOTH SIDES

Multiple Choice

What is the value x?

• 65

• 25

• 15

Fill in the Blanks

To solve this equation, subtract

from both sides.

Multiple Choice

In this equation, x equals

• 20

• 4

• 5