Download presentation

Presentation is loading. Please wait.

1
Algebra I 1.2 Order of Operations

2
**Objective The student will be able to:**

use the order of operations to evaluate expressions.

3
Evaluate • 3. Is your answer 33 or 19? You can get 2 different answers depending on which operation you did first. We want everyone to get the same answer so we must follow the order of operations.

4
**Remember the phrase “Please Excuse My Dear Aunt Sally” or PEMDAS.**

ORDER OF OPERATIONS 1. Parentheses - ( ) or [ ] 2. Exponents or Powers 3. Multiply and Divide (from left to right) 4. Add and Subtract (from left to right)

5
**Once again, evaluate 7 + 4 3 and use the order of operations.**

= (Multiply.) = (Add.)

6
Example #1 14 ÷ 7 • 2 - 3 = 2 • (Divide l/r.) = (Multiply.) = 1 (Subtract.)

7
**Example #2 3(3 + 7) 2 ÷ 5 = 3(10) 2 ÷ 5 (parentheses)**

= 3(100) ÷ 5 (exponents) = 300 ÷ 5 (multiplication) = 60 (division)

8
Example # • (6 + 1) • 4 = • (7) • 4 (parentheses) = • (7) • 4 (exponents) = (7) • (Multiply l/r.) = (Multiply l/r.) = (Subtract l/r.) = (Add l/r.) = (Add.)

9
**Which of the following represents 112 + 18 - 33 · 5 in simplified form?**

-3,236 4 107 16,996 Answer Now

10
Simplify (10 - 3) 2 -7 12 98 Answer Now

11
Simplify 24 – 6 · 4 ÷ 2 72 36 12 Answer Now

12
**Evaluating a Variable Expression**

To evaluate a variable expression: substitute the given numbers for each variable. use order of operations to solve.

13
**Example # 4 n + (13 - n) 5 for n = 8**

= 8 + (13 - 8) 5 (Substitute.) = (parentheses) = (Divide l/r.) = (Add l/r.)

14
**Example # 5 8y - 3x2 + 2n for x = 5, y = 2, n =3**

= 8 3 (Substitute.) = 8 3 (exponents) = (Multiply l/r.) = (Multiply l/r.) = (Multiply l/r.) = (Subtract l/r.) = (Add l/r.)

15
**What is the value of -10 – 4x if x = -13?**

-62 -42 42 52 Answer Now

16
**What is the value of 5k3 if k = -4?**

-8000 -320 -60 320 Answer Now

17
**What is the value of if n = -8, m = 4, and t = 2 ?**

10 -10 -6 6 Answer Now

Similar presentations

Presentation is loading. Please wait....

OK

Order of Operations Algebra Seminar 2012-2013.

Order of Operations Algebra Seminar 2012-2013.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on water resources class 10 Ppt on pricing policy samples Download ppt on rectification of errors Ppt on online banking system in php Project ppt on product launch Download ppt on cultural heritage of india Ppt on power sharing in democracy your vote Ppt on mars orbiter mission Lecture ppt on plasma membrane Ppt on cross cultural differences