math
posted by melissa .
how do u figure out what 18% of 34 is?

Change 18% to a decimal: 0.18
Multiply:
0.18 * 34 = ? 
thanks so u move the decimal two to the left on the first #

Right.
18% means 18 parts of 100. Another way of writing that is 18 hundredths or 0.18. 
so if u had 4% of 56 it would be o.o4 *56=the answer

Right.
0.04 * 56 = ? 
thanks k so what about this...
thirty percent of what number is 120? 
how do u figure that out

30% = 0.3
Multiply. 
You can set up an equation:
30%= .3, so you'll have
.3x= 120 (where x is the number whose 30% is 120)
x= 120/.3
x= 400
You can check by multiply .3 x 400= 120
So 30% of 400 is 120
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