MACHINE SHOP CALCULATION - OD1640 - LESSON 1/TASK 2
number 3 to the left of the decimal point is a plain 3, meaning 3 whole
units. The second 3 is three tens or thirty. In reading from the left of a
decimal point, each unit increases in value by ten times the unit to its
What happens to the right of the decimal point? Figure 7 indicates that the
first three to the right of the decimal point is three-tenths of one. The
second three to the right of the decimal point is three-hundredths of one.
In reading to the right of a decimal point, each unit decreases in value by
one-tenth of the unit to its left. Thus, 333. is read three hundred thirty-
If the decimal point is moved one place to the left, it becomes
33.3, or thirty-three and three-tenths.
Again, move the decimal point to
the left one space.
It is now 3.33.
This is read as three and thirty-
Rule 1. Add as many zeros to the numerator of the common fraction as you
Then divide the resulting
number by the denominator. Next, place the decimal point so as to make as
many decimal places in the result as you have added zeros to the numerator.