Order of Operations

Order of Operations Review

Is it really PEMDAS?

Open Ended

How are you today?

Multiple Choice

 Try evaluating this expression:

 $8\div2\left(2+2\right)$ 

• 16

• 1

• Something else

Which work more closely matches your thinking?

• One of these has an error.

• Can you find it?

Open Ended

Which option has the error? What is the error?

Today's Learning Intention

I can apply the order of operations to evaluate expressions correctly.

You probably learned this ➡️ ➡️ ➡️

• We are going to break up with Aunt Sally today.

• Instead of 6 steps, we will have 4.

GEMDAS

• G is for Grouping Symbols

• E is for Exponents

• M is for Multiplication

• D is for Division

• A is for Addition

• S is for Subtraction

GEMDAS

Four steps:

1. Start with operations inside grouping symbols: ( ), { }, [ ],

2. Evaluate exponents.

3. Multiply and divide left to right.

4. Add and subtract left to right.

Multiple Select

Select all the grouping symbols.

• ( )

• { }

• [ ]

• < >

Multiple Choice

If division appears in an expression before multiplication, I can do the division first. (When reading it left to right.)

• true

• false

Poll

If I could have an extra finger or toe, I would choose to have an extra.....

• toe

• finger

Fill in the Blank

For the next few questions, you are going to identify the first operation you would do to the expression using GEMDAS. Type the word "first" in the box if you have read this.

Multiple Choice

 $5+9+10+16\div4$  
Which is the first operation?

•  $5+9$  

•  $9+10$  

•  $10+16$  

•  $16\div4$  

Multiple Choice

 $\left(7+90\div9\right)\ +56\div7$  
Which is the first step?

•  $7+90$  

•  $90\div9$  

•  $56\div7$  

•  $9+56$  

Multiple Choice

 $10+5+7^2+6^2+8$  
Which is the first step?

•  $10+5$  

•  $5+7^2$  

•  $7^2$  

•  $6^2$  

•  $6^2+8$  

Multiple Choice

 $5+\left(3^3-8\right)+10+7$  
Which is the first step?

•  $5+3^3$  

•  $3^3$  

•  $3^3-8$  

•  $8+10$  

Multiple Choice

 $6-4+54\div6\times3$  
Which is the first step?

•  $6-4$  

•  $4+54$  

•  $54\div6$  

•  $6\times3$  

Open Ended

How is GEMDAS different than using the old school Please Excuse My Dear Aunt Sally?