IMPORTANT: Numeric entry fields must not contain dollar signs, percent signs, commas, spaces, etc. (only digits 0-9 and decimal points are allowed).

Click the Terms tab above for a more detailed description of each entry.

Enter the positive numbers you would like to add, separating each number by either a comma or line return.Step #2:

Click the "Calculate Sum" button and scroll down to view the results, which will include an interactive tutorial.