Download presentation

Presentation is loading. Please wait.

Published byRahul Aney Modified over 2 years ago

2
Order of Operations

3
When an expression contains more than one operation, you can get different answers depending on the order in which you solve the expression.

4
Here are some examples… Problem Without Order of Operations Following Order of Operations 12 + 36 x 2 48 x 2 96 12 + 72 84 3 2 + 8 11 2 121 9 + 8 17 (4 + 5) x 7 4 + 35 39 9 x 7 63

5
Mathematicians have agreed on a certain order for evaluating expressions, so we all arrive at the same answers. We often use grouping symbols, like parentheses, to help us organize complicated expressions into simpler ones.

6
Please Excuse My Dear Aunt Sally is a helpful way to remember these rules for the order of operations.

7
Please First, do all operations that lie inside parentheses. Example: (3 + 12) 2 + 3 x 9 (15) 2 + 3 x 9

8
Excuse Next, do any work with exponents or roots. Example: (15) 2 + 3 x 9 225 + 3 x 9

9
My Dear Working from left to right, do all multiplication and division. Example: 225 + 3 x 9 225 + 27

10
Aunt Sally Finally, working from left to right, do all addition and subtraction. Example: 225 + 27 252

11
Important Note: Be sure to follow the order of operations within the parentheses.

12
Remember… Please Excuse My Dear Aunt Sally Parentheses, Exponents, Multiplication & Division, Addition & Subtraction

13
Some examples…. 8 x 2 2 + 7 x 5 *Exponents* 8 x 4 + 7 x 5 *Multiplication* 32 + 35 * Addition* 67 (4 + 3 x 2) 2 - 5 (4 + 3 x 2) - 5 *Parentheses - Multiplication* (4 + 6) - 5 *Parentheses – Addition* 10 - 5 *Subtraction* 55

Similar presentations

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google