You will now begin a review of decimal fractions. You will use them more frequently than the
other type of fractions you have been using because they are easier to handle.
You use decimal fractions every time you use money; for example,
.01. You have added and subtracted money all of your life.
Decimal fractions are fractions written in a particular form. The denominator of the decimal
fraction is always 10, 100, 1000 or some other multiple of 10. The fraction 1/10 is written as .1; 1/100
as .01; and 1/1000 as .001. The number of places to the right of the decimal point (.) shows the
number of zeros in the denominator. Using this method, you write the fraction 875/1000 as .875. (3
zeros)(3 places to the right)
The decimal point (.) provides a simple way to write a number that contains both a whole
number and a fraction. For example:
The mixed number 10 3/4 can be written as 10 75/100 or
10.75 as a decimal. The
two parts--the whole number on the left and the decimal
fraction to the right.