Slide 1: Order of Operations ( ) + X - 43 ?
The Order of Operations tells us how to do math problems with more than one operation, in the correct order. : The Order of Operations tells us how to do math problems with more than one operation, in the correct order.
Please Excuse My Dear Aunt Sally : Please Excuse My Dear Aunt Sally This phrase will help you remember the order of operations.
Please Excuse My Dear Aunt Sally : Add +
Subtract - Multiply x
Divide ? Please Excuse My Dear Aunt Sally P E M
D A
S Parentheses ( ) Exponents 43
Please Excuse My Dear Aunt Sally : Please Excuse My Dear Aunt Sally Parentheses ( ) Always do parentheses 1st.
Please Excuse My Dear Aunt Sally : Please Excuse My Dear Aunt Sally Exponents 43 Always do Exponents 2nd.
Please Excuse My Dear Aunt Sally : Multiply x
Divide ? Please Excuse My Dear Aunt Sally Do multiplication and division 3rd, from left to right.
Please Excuse My Dear Aunt Sally : Add +
Subtract - Please Excuse My Dear Aunt Sally Do addition and subtraction 4th, from left to right.
Slide 10: Let’s Try Some ? Problems!
PEMDAS : PEMDAS 3+23- (9+1) 3+23- 10 3+8-10 11-10 1
PEMDAS : PEMDAS 3 (9+1) + 62 3(10)+62 3(10)+36 30+36 66
PEMDAS : PEMDAS 4+5 x (6-2) 4+5 x 4 4+20 24
PEMDAS : PEMDAS 4+ 10 x 23 -16 4+10 x 8 -16 4+ 80 -16 84-16 68
PEMDAS : PEMDAS 21 + 102 ? 10 21+100?10 21 + 10 31
PEMDAS : PEMDAS 10+72-2 x 5 10+49–2 x 5 10+49- 10 59 - 10 49
PEMDAS : PEMDAS 64 ? (9 x 3-19) 64?(27 –19) 64 ? 8 8
Slide 18: Have fun doing the Order of ? Operations!