Order of Operations

Order of Operations

Parenthesis (Grouping Symbols)

Exponents

Multiplication and Division - left to right (first come, first served!)

Addition and Subtraction - left to right (first come, first served!)

We think of PEMDAS when solving expressions!

Be careful! In the expression 14/2 * 5,

we would DIVIDE before we MULTIPLY, because we look for multiplication and division at the same time, and solve them in the order we see them, going left to right!

Remember:

Parenthesis (Grouping Symbols)

Exponents

Multiplication and Division - left to right (first come, first served!)

Addition and Subtraction - left to right (first come, first served!)

Multiple Choice

Which operation would you solve first in this expression? (3 * 4) - 2 + 8/8

• multiplication

• subtraction

• addition

• division

Which operation would you solve first in this expression? (3 * 4) - 2 + 8/8

You would solve multiplication because you solve parenthesis first! :)

Multiple Choice

Which operation would you solve first in this expression? 3 * (4 - 2) + 8/8

• multiplication

• subtraction

• addition

• division

Which operation would you solve first in this expression? 3 * (4 - 2) + 8/8

You would solve subtraction first because alway solve the parenthesis first!

Multiple Choice

Which operation would you solve first in this expression? 3 * 4 - 2 + 8/8

• multiplication

• subtraction

• addition

• division

Which operation would you solve first in this expression? 3 * 4 - 2 + 8/8

You would solve multiplication first because there are no parenthesis, and no exponents. Next you look for multiplication and division going left to right, and you see MULTIPLICATION first!

Multiple Choice

Solve this expression: 3 x (4 -1)

• 11

• 9

• 15

• 0

Solve this expression: 3 x (4 -1)

3 x (4 - 1)

3 x 3

9 :)

Multiple Choice

Solve this expression on a piece of paper, solving one operation at a time, using Order of Operations: 4 + 8 * 3 - 1

• 35

• 20

• 27

• 33

Solve this expression on a piece of paper, one operation at a time, using Order of Operations: 4 + 8 * 3 - 1

4 + 8 * 3 - 1

4 + 24 - 1

28 - 1

27 :)