Math Word Problems Demystified - A Self Teaching Guide

(Marvins-Underground-K-12) #1

REFRESHER III Percents


Percentmeans hundredths or part of a hundred. For example, 37% means
0.37 or 10037. You can think of 37% as a square being divided into 100 equal
parts and 37% is 37 equal parts out of 100 equal parts.
To change a percent to a decimal, drop the % sign and move the decimal
point two places to the left. The decimal point in 37% is between the 7 and
the % sign. It is not written.


EXAMPLE:Write each percent as a decimal:


(a) 54%
(b) 6%
(c) 235%
(d) 42.8%

SOLUTION:


(a) 54%¼0.54
(b) 6%¼0.06
(c) 235%¼2.35
(d) 42.8%¼0.428

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