Deck 5: Addition of Common Fractions

Question 1

The top number of a fraction is called the ____________________.

Answer 1

numerator

Question 2

The three center journals in a crankshaft are 1 1/16 inches long, the front journal is 1 1/2 inches long, and the rear journal is 1 7/8 inches long. What is the total length in inches of the five main bearing journals?

A) 5 1/16
B) 6
C) 6 9/16
D) 7 5/16

Answer 2

6 9/16

Question 3

A piece of hose has an inside diameter of 2 5/8 inches and a wall thickness of 5/16 inch. What is the outside diameter in inches?

A) 3 1/4
B) 3 1/2
C) 3 9/16
D) 3 3/4

Answer 3

3 1/4

Question 4

A bumper is 9/16 inch thick, the frame is 1/2 inch thick, and there is 5/16 inch projecting. What length bolt (under-the-head), in inches, is needed?

A) 5/8
B) 7/8
C) 1 1/8
D) 1 3/8

Question 5

An interior refinishing job calls for these lengths of simulated wood grain decal material: 2 pieces, 21 centimeters each; 2 pieces, 17 5/8 centimeters each; 2 pieces, 89 1/2 centimeters each; and 2 pieces, 56 1/4 centimeters each. What is the total length, in centimeters, needed for this job?

A) 350 1/4
B) 368 3/4
C) 375 5/16
D) 380 5/8

Question 6

The type of fractions you are most likely to see are ____________________ fractions.

Question 7

A mechanic works 3 1/4 hours on one car, 1 2/3 hours on another car, and 4 3/4 hours on a third car. What is the total number of hours worked?

A) 8 1/3
B) 9 2/3
C) 10 2/3
D) 11 1/3

Question 8

The bottom number of a fraction is called the ____________________.

Question 9

A pipe has a 3/4-inch wall thickness and a 2 3/8-inch inside diameter. Find the outside diameter of the pipe.

A) 3 5/8
B) 3 7/8
C) 4 3/8
D) 4 7/8

Question 10

If a frame is 5/16 inch thick and the crossmember is 3/32 inch thick, what is the combined thickness in inches of both members?

A) 9/32
B) 11/32
C) 13/32
D) 15/32