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Chapter 7



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Given the fractions 3/4, 5/8, 7/16, and 15/32, the lowest common denominator is __________.
a.
4
b.
8
c.
16
d.
32
 

Completion
Complete each statement.
 

 2. 

The top number of a common fraction is called the ____________________.
 

 

 3. 

1/4 + 3/4 = ____________________.
 

 

 4. 

3/8" + 1/4" + 5/16" = ____________________.
 

 

 5. 

1/8 + 5/12 + 1/3 = ____________________.
 

 

 6. 

4-3/4 + 6-3/4 = ____________________.
 

 

 7. 

3-1/3 gallons + 5-3/4 gallons + 9-3/8 gallons = ____________________ gallons.
 

 

 8. 

3/8 watt + 7/16 watt + 2-11/16 watts = ____________________ watts.
 

 

 9. 

The number on the bottom of a common fraction is called the ____________________.
 

 

 10. 

3/4 minus 3/8 = ____________________.
 

 

 11. 

28 pounds minus 16-4/7 pounds = ____________________ pounds
 

 

 12. 

If a 3-1/2" beam is covered with 3/4" plywood on one side and 5/8" drywall on the other side, the total thickness is ____________________ inches.
 

 

 13. 

3/16 ´ 4/5 = ____________________.
 

 

 14. 

5-9/16 ´ 3 ´ 5/7 = ____________________.
 

 

 15. 

3/8 divided by 3/4 = ____________________.
 

 

 16. 

2-7/16 divided by 7/9 = ____________________.
 

 

 17. 

1 divided by 1/5 = ____________________.
 

 

Short Answer
 

 18. 

Express 0.6875 as a fraction.
 

 19. 

Express 7/8 as a decimal.
 

 20. 

An electrical contractor bills a customer $67.00 per hour for 5 1/4 hours per day for 6 days. If he pays his workers 1/3 of what he receives and uses 1/4 of what he receives to pay for materials, how much money is left for the contractor?
 

 21. 

Explain what a mixed number is.
 



 
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