Exam 10: Combined Operations With Common Fractions

Use only the rules for addition and division of common fractions to solve the combined operations with common fractions problems.

Solve and reduce all answers to lowest terms: 5/8 + 3/4 + 1/16 + 3/8 =

A piece of duct measures 28 inches. When 2 pieces are fitted together, 1 1/2 inches are allowed on each duct for fitting. On a job, 28 1/2 pieces of ducting are used. Find in inches the length of the finished duct.

A technician uses #10 wire for a repair job. Before starting the job, the roll has 85 1/4 feet of wire on it. The technician uses 1/3 of the roll. How many feet of wire are left on the roll?

The lowest common denominator when adding the fractions 1/20 + 1/5 + 1/15 is 30.

Solve and reduce all answers to lowest terms: 2 5/8 x 3/4 =

Solve and reduce all answers to lowest terms: 2 1/4 ÷ 1/3 =

A technician uses #10 wire for a repair job. Before starting the job, the roll has 85 1/4 feet of wire on it. The technician uses 1/3 of the roll. How many feet of wire does the technician use?

Solve and reduce all answers to lowest terms: 3 7/8 - 3/4 - 1/16 =

A circular duct has an outside diameter of 7 3/8 inches. Insulation that is 1 3/16 inches thick is wrapped around the duct. What is the diameter of the insulated duct?