GRE Math : How to divide decimals

Example Questions

Example Question #13 : Decimals

Solve for :

Explanation:

To solve, first divide both sides of the equation by , leaving you with:

.

If you have trouble dividing the decimals, you can multiply both of the numbers by one followed by a number of zeroes equal to the number of digits beyond the decimal point (one hundred, in this case), then divide, then divide your result by the same number (one hundred again).

Example Question #1 : How To Divide Decimals

Solve for  (round to the nearest hundredth if necessary)

Explanation:

To solve, first divide both sides of the equation by :

To do this division, you can divide as normal, or if you are having trouble, you can multiply both numbers by 10 to eliminate the decimal:

Example Question #15 : Decimals

Solve for :

Explanation:

To solve, first divide both sides of the equation by  so you isolate the variable:

Then, divide the decimal--if you have trouble doing so, remember that you can multiply both numbers by  to eliminate the decimal, and then divide as normal:

Example Question #16 : Decimals

Solve for :

Explanation:

To solve, first divide both sides of the equation by  so you can isolate the variable:

Now divide.  If you have trouble dividing decimals, you may multiply both dividend and divisor by  to eliminate the decimal and divide normally:

Solve for :