Review writing fractions as decimals, and try some practice problems.

Writing fractions as decimals

To convert a fraction to a decimal, we divide the numerator by the denominator.
If we have a mixed number, the whole number stays to the left of the decimal.
Example 1: 25\dfrac25
25=2÷5\dfrac\blueD2\greenD5 =\blueD2\div\greenD5
25=0.4\dfrac\blueD2\greenD5 =0.4
Example 2: 3783\dfrac78
3\redC3 stays to the left of the decimal. Then, we divide 7\blueD7 by 8\greenD8.
78=7÷8\dfrac\blueD7\greenD8 =\blueD7\div\greenD8
378=3.875\redC3\dfrac\blueD7\greenD8 =3.875
Want to learn more about writing fractions as decimals? Check out this video.

Practice

Problem 1
Rewrite 310\dfrac{3}{10} as a decimal.
  • Your answer should be
  • an exact decimal, like 0.750.75

Want to try more problems like this? Check out this exercise.