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DECIMALS. 1
5
Solution
:
318.0500 Minuend.
121.6542 Subtrahend.
196.3958 Difference.
Hultiplication of Decimal Fractions.
Multiply the factors as if they were whole numbers. After
multiplication is performed, count the number of decimals in
both multiplier and multiplicand and point off (from the right)
the same number of decimals in the product.
If there are not enough figures in the product to give as
many decimals as required, then prefix ciphers on the left until
the required number of decimals is obtained.
Example 1.
0.08 X 0.065 — 0.00520 = 0.0052
In this example it is necessary after the multiplication is
performed, to prefix two ciphers to the product in order
to obtain the necessary number of decimals, because the pro-
duct, 520, consists of only three figures, but the two numbers,
0.08 and 0.065, contain five decimals.
Example No. 2.
3.1416 X 5 = 15.7080 = 15.708
Example No. 3.
3.1416 X 0.5 = 1.57080 = 1.5708
Division of Decimal Fractions.
Divide same as in whole numbers, and point off in the
quotient as many decimals as the number of decimals in the
dividend exceeds the number of decimals in the divisor.
If the divisor contains more decimals than the dividend,
then before dividing annex ciphers (on the right-hand side) in
the dividend until dividend and divisor are both of the same
denomination, then the quotient will be a whole number.
Example.
43.62 -f- 0.003 = 14,540
Solution : 0.003 ) 43.620 ( 14,540
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