Civil Engineering Reference
In-Depth Information
“three hundred
and
twenty-seven hundredths.” The decimal .327 is
read “three hundred twenty-seven thousandths,” whereas the decimal
300.027 is read “three hundred
and
twenty-seven thousandths.”
Reduction of Common Fractions to Decimals
Divide the numerator by the denominator, adding zeros and carrying
the division to as many decimal places as are necessary or desirable
(see Figure 5-5).
Example
Reduce the common fraction
21
/
32
to a decimal.
0
.
65625
32 21
00000
192
180
160
200
192
80
64
160
160
00
.
Count off as many decimal places in the quotient as those in the
dividend
exceed
those in the divisor. The quotient is .65625.
Subtraction of Decimals
Align the decimal points in the minuend and the subtrahend as
shown for addition, and proceed as explained in subtraction of
whole numbers. The decimal point in the remainder is placed in
exact alignment with those decimal points above the line.
Example
The problem:
167
.
02
−
27
.
267
The solution:
167
.
020
−
27
.
267
139
.
753
Note that it is necessary to add a zero to the decimal 167.02 in
order to make the subtraction, but this does not change its value
(
20
/
1000
is the same value as
2
/
100
).
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