Transcript of 12/3/14 Warm up ORDER OF OPERATIONS small to Large = divide 5,280 ft = 1 mile (mi) 2,640 ft = mi.
12/3/14 Warm upORDER OF OPERATIONS
• small to Large = divide 5,280 ft = 1 mile (mi)
• 2,640 ft = mi
small to Large = divide 5,280 ft = 1 mile (mi)
• 2,640 ft = mi
• X = 1 mi• 2,640 ft = 5,280 ft
5,280 X = 2,640 • 1
• 5,280 X = 2,640• 5,280 5,280
• X = 0.5 mi same as ½
You all know how to add, subtract,
multiply, and divide.
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Purple Elephants May
Destory A School
12/3/2014 Order of Operations
Parentheses: Simplify the expressions inside grouping symbols like parenthesesExponents and Square Roots: Find the value of all powers and square roots
Multiply and Divide in order from Left to Right
Add and Subtract in order from Left to Right
But what happens when all of those
operations are in the same math problem?
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There is a phrase we use to help us
remember the order of operations…
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Purple Elephants May Destory A School!
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Purple
1. Solve inside parentheses ( )
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For Example: 10 + (5 - 4) x 3
10 + 1 x 3
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May Destory 2. Multiply or Divide
from left to right.
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For Example: 10 + (5 - 4) x 3
10 + 1 x 3 10 + 3
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A School !
2. Add or Subtract from
left to right.
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For Example: 10 + (5 - 4) x 3
10 + 1 x 3 10 + 3 13
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Now it is your turn to try!
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What should I solve first in 5 x 3 – (2 + 2) ?
5 x 3
2 + 2
3 - 2
5 + 2
That is correct!You remembered that you solve inside the parentheses ( ) first!
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Good Try, but remember that
Purple Elephants May Destory A School
!
Try Again
What should I solve first in 6 + 4 x 3?
4 x 3
6 + 3
6 + 4
10 x 3
That is correct!
You remembered to multiply and divide before you add and