R-39 Percents

Core Math Goal: How can you use proportions to find percentages of a value when you know a certain percentage of the same value?

TMWYK: Percents


-Similar to fractions
-Show a fraction-25%=1/4
-multiply/divide turn % into decimal part of a #
-Out of 100 26/100=26%

Constant of Proportionality
-The other number in a unit rate that is not the 1
-The amount the thing goes up or down by each time
43:1

R-40
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Digital Camera
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