百分數的應用(一、二)
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學校有200名童軍,男同學有120名,男同學佔全部童軍人數百分之幾?
120/200 X 100%
小明有15粒紅色波子及30粒藍色波子,紅色波子佔全部波子的百分之幾?
15/15+30 X 100%
學校有200名童軍,男同學有120名,女同學佔全部童軍人數百分之幾?
200-120 / 200 x 100%
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