WORK:

62.5 ÷ 10 = 6.25

62.5 ÷ 100 = .625

62.5 ÷ 1000 = .0625

Expression of decimal fractions as common fractions.

EXAMPLE: Express 5.375 as a common fraction.

.375 = 375 thousandths.

375 3

Therefore 5.375 = 5---- = 5- _Ans._

1000 8

RULE.--_Take the digits of the decimal for numerator; for the

denominator put down 1 followed by as many ciphers as there are digits

in the decimal. Reduce this fraction to its lowest terms._

Expression of common fractions as decimals.

We have seen that a common fraction represents the quotient of the

numerator divided by the denominator. Therefore, to convert a common

fraction to a decimal fraction, we divide the numerator by the

denominator.

EXAMPLE: Express 3/32 as a decimal.

4) 3.0

---------

8) .75

---------

.09375 _Ans._

It will be found in many cases that there is always a remainder, so that

the quotient can be continued indefinitely.

The Circle of Knowledge: A Classified, Simplified, Visualized Book of Answers · 第 1178 / 1638 题