% increase or decrease.notebook
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Check : Percents and Discounts (Shopping Activity)
L.T. : Determine if a value has undergone a Percent Increase
or a Percent Decrease. Calculate that Percent of Change.
Warm­up : Write a Sentence in Response
Pat and Sandy got a job painting a house. They agreed that Pat would
handle the money and Sandy would look after the tools. Pat told Sandy,
"Since we're sharing the work, I'll give you (1/2)% of the money we make."
Is that fair? If not, what would be more fair?
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% increase or decrease.notebook
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% increase or decrease.notebook
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% increase or decrease.notebook
March 15, 2013
L.T. : Determine if a value has undergone a Percent Increase
or a Percent Decrease. Calculate that Percent of Change.
What is Percent Increase/Decrease?
Percent Change ­ The Percent Increase (more than 100%) or Percent Decrease (less than 100%) of a
new value in relation to an original value.
10% off is _____ % of the original
25% off is _____ % of the original
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% increase or decrease.notebook
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% increase ­­ Say we start with $10 in a bank
Then, it is increased by...
10% (divide by ) 25% (divide by ) 50% (divide by ) 100%
Percent change =
Find the % of increase or decrease
1)
2)
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% increase or decrease.notebook
March 15, 2013
Find the % change from $16 to $12.
1) Increase or Decrease
2) Find the change in value
3) Use proportion/equation to find % Change Find the % change from 70 chairs to 98 chairs.
1)
2)
3)
Find the % change from $2.09 to $2.24
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% increase or decrease.notebook
March 15, 2013
A new TV is normally sold for $450. It is on sale
this weekend for 20% off. What is the sale price?
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% increase or decrease.notebook
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