文档介绍：Percent Equations - SchoolRack分方程SchoolRack
When fractions are equal or proportional:
Many word problems can be sPercent Equations - SchoolRack分方程SchoolRack
When fractions are equal or proportional:
Many word problems can be solved using the formula
“is over of equals percent over 100.”
We can use this relationship to set up equations and solve for the variable.
BACK
The value of
the is & of come
from the problem
The number here is
already a percent, just
replace with the number
The 100 stays
the same in all
problems
Only 2 of the 3 values of is, of, and % will be given, the missing amount is were you will put the variable.
BACK
Example #1
Sixty-eight is 20% of what number?
68
20
x
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Example #2
What number is 15% of 60?
15
60
x
BACK
Example #3
37 is what percent of 296?
37
296
x
BACK
You try this one.
Percent Equations
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谢谢观看