Challenge Exercises: Multiplying and Dividing Fractions and Mixed Numbers

Directions: Perform the necessary operation in each exercise below. Be sure to simplify your result, if necessary. Click once in an ANSWER BOX and type in your answer; then click ENTER. After you click ENTER, a message will appear in the RESULTS BOX to indicate whether your answer is correct or incorrect. To start over, click CLEAR.

Note: To write the fraction three-fourths, enter 3/4 into the form. To write the mixed number four and two-thirds, enter 4, a space, and then 2/3 into the form.

1. A candy bar is 9/15 of an inch long. If it is divided into pieces that are 1/5 of an inch long, then how many pieces is that?
 
 
ANSWER BOX:   pieces   

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2. Justin gave 2/3 of his pizza to 8 friends who shared the pizza equally. What fraction of the original pizza did each friend get?
 
 
ANSWER BOX:   

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3. challenge-exercise3_1.gif
 
 
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4. Marcy’s garden is 3 and 4/5 meters long and 2 and 7/8 meters wide. What is the area of the garden?
 
 
ANSWER BOX:  m2   

RESULTS BOX: 
5.  challenge-exercise5.gif
 
 
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6. A chocolate bar is 11/12 of an inch long. If it is divided into pieces that are 5/8 of an inch long, then how many pieces is that?
 
 
ANSWER BOX:   pieces   

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7. A painter had a trough with 22 liters of paint. If each bucket holds 2 and 3/4 liters, then how many buckets of paint can be poured from the trough?
 
 
ANSWER BOX:   buckets   

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8.   challenge-exercise8.gif
 
 
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9.   Frank has 8 and 2/3 feet of rope. If he divides the rope into pieces that are 1 and 4/9 feet long, then how many pieces of rope will he have?
 
 
ANSWER BOX:  pieces    

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10. Cathy’s classroom has an area of 15 and 5/6 square feet. If the length is 8 and 3/4 feet, then what is the width of  her classroom?
 
 
ANSWER BOX:  feet   

RESULTS BOX: