Deck 11: Subtraction of Decimal Fractions

Question 1

An aluminum piston from an antique car measures 3.494 inches when cold. When heated it measures 3.4996 inches. What is the amount of expansion?

A) 0.0056
B) 0.0067
C) 0.0078
D) 0.0089

Answer 1

0.0056

Question 2

A certain foreign car manufacturer calls for tire pressure measurements in kilograms per square centimeter. The reading on one tire is 1.44 kg/cm². The specification calls for 1.68 kg/cm². How much air should be added to the tire in kg/cm²?

A) 0.20
B) 0.22
C) 0.24
D) 0.26

Answer 2

0.24

Question 3

A cylinder bore that is out-of-round measures 2.3748 inches in one direction and 2.3756 inches in the other direction. How much is the cylinder out-of-round?

A) 0.0001
B) 0.0003
C) 0.0006
D) 0.0008

Answer 3

0.0008

Question 4

Two pistons have diameters of 5.8945 inches and 3.4985 inches. What is the difference in the diameters?

A) 2.182
B) 2.254
C) 2.396
D) 2.478

Question 5

The standard diameter of the spider in a universal joint is 14.45 mm. A worn joint measures 14.33 mm. How much, in millimeters, is the spider worn?

A) 0.12
B) 0.22
C) 0.24
D) 0.28

Question 6

When subtracting, place the smaller number ____________________ the larger number, keeping the decimal points in line.

Question 7

When subtracting, put in as many zeros as necessary to the ____________________ of the decimal point so that each number ends at the same place value.

Question 8

The standard size of a bore is 3.625 inches. It is honed to 3.628 inches. How many inches is the diameter increased?

A) 0.0003
B) 0.003
C) 0.03
D) 0.3

Question 9

8 - 4.1 = ____________________.

Question 10

How much must be cut from a shackle bushing measuring 2.234 inches in length to fit a spring 2.009 inches wide?

A) 0.215
B) 0.225
C) 0.230
D) 0.240