Deck 7: Subtraction of Common Fractions

Question 1

In one week a technician works 37 1/2 hours and finishes two jobs. It takes 17 hours to finish the first job. How long does it take to finish the second job in hours and fractional hours?

Answer 1

20 1/2

Question 2

Solve and reduce all answers to lowest terms: 9 3/8 feet - 2 7/16 feet =

Answer 2

6 15/16 feet

Question 3

Solve and reduce all answers to lowest terms: 5 1/8 - 1/4 =

Answer 3

4 7/8

Question 4

Solve and reduce all answers to lowest terms: 7/16 - 3/16 =

Question 5

A mixed number is a whole number and a fraction.

Question 6

In a 37 1/2-hour workweek, a technician works three jobs. If he spends 11 1/4 hours on one job, and 13 3/4 hours at a second job, how much time was spent on the third job in hours?

Question 7

Five air-conditioning units are checked and recharged with refrigerant R-134a. A full cylinder of R-134a contains 32 pounds of refrigerant. These amounts are taken from a full cylinder: 7 1/2 pounds, 8 2/3 pounds, 5 1/4 pounds, and 4 7/8 pounds. How many pounds of R-134a are left?

Question 8

Solve and reduce all answers to lowest terms: 2/3 - 5/8 =

Question 9

You can determine if a fraction is an improper fraction if the numerator of the fraction is an odd number.

Question 10

A piece of polyvinylchloride (PVC) tubing which measures 4 1/8 feet long is needed for a drain of an air-conditioning unit. The piece is cut from a 9-foot long coil of tubing. How much tubing is left in feet and fractional feet?