MACHINE SHOP CALCULATION - OD1640 - LESSON 1/TASK 1
the numerator of this fraction, the numerator of the fractional part of the
mixed number.
EXAMPLE
Reduce 7 + 3/5 to 5ths.
1 = 5/5, 7 = 7 x 5/5 = 35/5
7 + 3/5 = 35/5 + 3/5 = 38/5
(3) Rule 3.
To change a fraction to another fraction having a desired
denominator, divide the desired denominator by the existing denominator.
Then multiply both numerator and denominator of the existing fraction by the
resulting quotient.
In case of a mixed number, first change it to a
fraction as described in the preceding rule, and then proceed as described.
EXAMPLE
Reduce 3/4 to 28ths.
28 + 4 = 7, 7 x 3 = 21, 3/4 = 21/28
c.
Changing an Improper Fraction to a Whole or Mixed Number.
Do the
division shown in the following example. The quotient will be the number of
units. If there is no remainder, it reduces to a whole number. If there is
a remainder, it reduces to a mixed number of which the quotient is the whole
number part and the remainder is the numerator of the fractional part.
EXAMPLE
Reduce 32/4 to a whole number.
32/4 = 32 + 4 = 8
Reduce 47/9 to a mixed number.
47/9 = 47 + 9 = 5 + 2/9
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