# How to Divide a Decimal by a Whole Number

If you run into a question on the ASVAB Mathematics Knowledge subtest where you have to divide a decimal by a whole number, you can use the following technique to quickly find the right answer.

Here’s how to divide a decimal by a whole number:

**Move the decimal point over to the right until the decimal is a whole number, counting the number of decimal places.**

For example, if you want to find 125 ÷ 4, change 1.25 to 125 by moving the decimal two decimal places to the right. Remember how many places you moved the decimal—you need that info later.**Perform the division operation on the whole number.**

125 ÷ 4 = 31.25**In your answer, move the decimal point to the left the number of places you moved it in Step 1.**

To make up for moving the decimal point two places to the right when you made 1.25 into a whole number, move the decimal point two places to the left in 31.25. Your answer is 0.3125.