43 Order of Operations ÷ ( ) + - X Meet Aunt Sally.

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Presentation transcript:

43 Order of Operations ÷ ( ) + - X Meet Aunt Sally

Moby would tell you that it’s important to put the filling in before baking the crust

Math is like baking a pie. You can’t just do the steps in any order.

The Order of Operations tells us how to do a math problem with more than one operation, in the correct order. Order of Operations

Please Excuse My Dear Aunt Sally Parentheses ( ) E Exponents 43 M D Multiply x Divide ÷ A S Add + Subtract -

Please Excuse My Dear Aunt Sally Parentheses ( ) Always do parentheses 1st.

Please Excuse My Dear Aunt Sally Exponents 43 Always do Exponents 2nd.

Please Excuse My Dear Aunt Sally Multiply x Divide ÷ Do multiplication and division 3rd, from left to right.

Please Excuse My Dear Aunt Sally Add + Subtract - Do addition and subtraction 4th, from left to right.

Let’s Try Some Problems! Get your math notebooks ready!

PEMDAS 14+2 - (9+1) 14+2 - 10 16 - 10 6

PEMDAS 3 x (9+1) 3 x(10) 3 x 10 30

PEMDAS 4+5 x (6 - 2) 4+5 x 4 4+20 24

PEMDAS 8 – 2 x 3 + 16 8 – 6 +16 2 +16 18

PEMDAS 64 ÷ (9 x 3 - 19) 64÷(27 –19) 64 ÷ 8 8

Put the following words in alphabetical order Parenthesis Braces Brackets Braces Brackets Parenthesis

Learning the order of these is as easy as… 3 2 1 Braces { } Brackets [ ] Parenthesis ( )

Parenthesis, brackets, then braces ( ) [ ] { } Parenthesis, brackets, then braces

Glue the pages in your math notebook. Complete the problems in your team.

Where would you put your Parentheses ( ) to make this problem true? PEMDAS Where would you put your Parentheses ( ) to make this problem true? 6 x 8 - 5 = 18 6 x (8 - 5)= 18 6 x 3 = 18

Where would you put your Parentheses ( ) to make this problem true? PEMDAS Where would you put your Parentheses ( ) to make this problem true? 42 ÷ 2 x 3 - 5 = 2 42 ÷ (2 x 3) - 5 = 2 42 ÷ (6) - 5 = 2 42 ÷ 6 - 5 = 2 7 - 5 = 2

More Practice 54 – 200 ÷4 3 x 8 – 6 ÷ 2 5 x 15 ÷ 3 10 – 4 + 2 - 1