do now 1.) 1.89 + 2 2.) 4.5 – 1.34 3.) 6.1 × 0.3 1.) 3.892.) 3.163.) 1.83
TRANSCRIPT
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Do Now
1.) 1.89 + 2 2.) 4.5 – 1.34 3.) 6.1 × 0.3
1.) 3.89 2.) 3.163.) 1.83
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11/1/2013 Order of Operations
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Simply/ Evaluate = Solve
• Order of operations- the order in which to solve problems with many operations
• PEM/DA/S
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P E M D A S D UD B
TRACT
XPONENTS
U IL VT II DP ELY
ARANTHESES
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Add +
Subtract -
Multiply x
Divide
Please Excuse My Dear Aunt Sally
PEMDAS
Parentheses ( )
Exponents 43
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Ex. 1 3+23- (9+1)
3+23- 10
3+8-10
11-10
1
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Ex. 23 (9+1) + 62
3(10)+62
3(10)+36
30+36
66
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Ex. 34+5 x (6-2)
4+5 x 4
4+20
24
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Create an expression using multiple operations
Switch with your neighbor.
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Ex. 4
Eduardo is 16. Eduardo’s dad takes him and his younger sister to a soccer match. Tickets are $17 for adults and $13 for children (18 and under). Write an expression for the total cost of the tickets. What is the total cost of the tickets?
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Exit Ticket Time!
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1.) (3 + 5) – 2 2.) 3 + 8 ÷ 4 + 12
3.) 28 – 32 x 2 4.) (3 + 5)2 – 2
6 17
10 62