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4 3. Order of Operations. . ( ). +. -. X. The Order of Operations tells us how to do a math problem with more than one operation, in the correct order. P lease E xcuse M y D ear A unt S ally. This will help you to remember the order of operations. Please Excuse My Dear Aunt Sally. - PowerPoint PPT Presentation
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Order of Order of OperationsOperations( ) +
X-
43
The Order of Operations tells us how to do a math problem with more than
one operation, in the correct order.
Please Excuse My
Dear Aunt Sally
This will help you to remember the order of operations.
Add +
Subtract -
Multiply x
Divide
Please Excuse My Dear Aunt Sally
PEMDAS
Parentheses ( ) Exponents 43
Please Excuse My Dear Aunt Sally
Parentheses ( )
Always do parentheses
1st.
Please Excuse My Dear Aunt Sally
Exponents 43
Always do Exponents
2nd.
Multiply x
Divide
Please Excuse My Dear Aunt Sally
Do multiplication
and division 3rd, from left to
right.
Add +
Subtract -
Please Excuse My Dear Aunt Sally
Do addition and subtraction 4th,
from left to right.
Let’s Try Let’s Try Some Some Problems!Problems!
PEMDAS3+23- (9+1)3+23-
103+8-1011-101
PEMDAS3 (9+1) + 623(10)+62
3(10)+3630+3
6 66
PEMDAS4+5 x (6-2)4+5 x 4
4+2024
PEMDAS4+ 10 x 23 -164+10 x 8 -164+ 80 -
1684-1668
PEMDAS
21 + 102 1021+10010
21 + 10 31
PEMDAS10+72-2 x 5 10+49–2 x 5 10+49-
10 59 - 104
9
PEMDAS
64 (9 x 3-19)64(27 –19)
64 8
8
Have fun Have fun doing the doing the Order of Order of Operations! Operations!