Fraction Problem Solving

Three fifths of the 30 students are boys.  How many students are girls?

• 12

• 18

• 6

• 8

Arther had one dollar.  He spent 75 cents of that dollar.  What fraction of his whole dollar did he spend?

Dara has to solve 35 math problems for homework.  She has completed 14 of them.  What fraction of the problems does she have left to do?

of the marbles in a box were black and the rest were white. Akiko put in some more black marbles. Now,  of the marbles are white. How many black marbles did Akiko put in?

of the marbles in a box were black and the rest were white. Akiko put in some more black marbles. Now, of the marbles are white. How many black marbles did Akiko put in?

Logan collected 18 ten-dollar bills while selling tickets for a show. He gave 1/6 of the bills to the theater and kept the rest. How much money did he keep?

• $150

• $165

• $132

• $155

of the marbles in a box were black and the rest were white. Akiko put in some more black marbles. Now, of the marbles are white. How many black marbles did Akiko put in?

There are 32 students in Mr. Duff's class.  If 4 come to after school tutoring, what fraction of the class comes to after school tutoring?