How to Calculate Subtotal

Calculating a Subtotal in a Few Easy Steps
1. Obtain a data set. This means that you need to have a set of numerical values listed. Using the example of a checking account deposit, this would be the checks and/or cash amounts that you need to deposit. Deposit slips have blank boxes for you to fill in these values.
2. Write your values down. For instance, you may have a check for $50.27, a check for $85 and $75 in cash that you wish to deposit. In the section for checks on your deposit slip, you would write 50.27 and 85.00. In the blank section for cash, you would record 75.00.
3. Add your data set. Using a calculator or just old-fashioned math skills, you should total your figures. In this example, you would perform the following operation: 50.27 85.00 75.00 = 210.27. This is your subtotal.
4. Perform any additional mathematical steps to your subtotal. Once you've obtained the subtotal, you may need to complete additional steps. For instance, if you are depositing money, but you want to keep out some of the money, you have to subtract from your subtotal. In this example, assume you want to keep out $15.50 from the deposit. You would subtract this amount from the subtotal, as illustrated with the following equation: 210.27 - 15.50 = 194.77. Your final deposit would be $194.77.