6-10 Order of Operations

6-10 Order of Operations

Math Message

Complete Math Journal Page 211 and use it to answer the next questions

Multiple Choice

Why did Tildy and Harrison get two different answers?

• Tildy solved 1+4 first

• Tildy solved

  $4\times2$ first

• Harrison solved $4\times2$ first

Multiple Choice

Who is correct? Should Tildy pay $10 or $9?

• $10

• $9

• neither

Tildy learned an important lesson...

Parentheses are important and show us which numbers are grouped together and which operation to do first so that we all get the same answer.

Order of Operations

1. Do operations inside parentheses first. Follow rules 2 and 3 when computing inside parentheses.

2. Multiply or divide in order from left to right.

3. Add or subtract in order from left to right.

Multiple Choice

Which part of the problem should you do first in the order of operations?

 $8-2\times3=?$  

• 8-2

• $2\times3$

Fill in the Blanks

Multiple Choice

 $20+10\div2=?$  

Which part of the problem should you complete first?

• 20+10

•  $10\div2$  

Fill in the Blanks

Multiple Choice

 $?=15-8+6$  

Which part of the problem should you complete first?

• 15-8

• 8+6
  

Fill in the Blanks

Multiple Choice

 $?=\left(15-6\right)\div9+5$  

Which part of the problem should you complete first?

•  $\left(15-6\right)$  

• 9+5

Fill in the Blanks

Your all done!

Now practice on Math Journal page 212

Multiple Choice

 $20+10\div2=?$  

Which part of the problem should you complete first?

• 20+10

•  $10\div2$