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Published byLaureen Edwards Modified over 3 years ago

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1.3 Order of Operations ( ) + X - 4343

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

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P lease E xcuse M y D ear A unt S ally This will help to you to remember the order of operations.

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Add + Subtract - Multiply x Divide Please Excuse My Dear Aunt Sally P E MDMD ASAS Parentheses ( ) Exponents 4 3

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

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Please Excuse My Dear Aunt Sally Exponents 4 3 Always do Exponents 2 nd.

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

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

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Let’s Try Some Problems!

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PEMDAS 3+2 3 – (9+1) 3+2 3 – 10 3+8-10 11-10 1

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PEMDAS 3 (9+1) + 6 2 3(10)+6 2 3(10)+36 30+36 66

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

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PEMDAS 4+ 10 ( 2 3 )-16 4+10(8) -16 4+ 80 -16 84-16 68

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PEMDAS 21 + 10 2 10 21+100 10 21 + 10 31

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PEMDAS 10+7 2 -2 (5) 10+49–2(5) 10+49- 10 59 - 10 49

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PEMDAS 64 [9(3)–19] 64 (27 –19) 64 8 8

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