Box 1. Wages, salariess, tips, etc.

When in turbo tax, I put the information on my 3 W-2's. The total (when in the program) matches me 3 W-2's. But, when I print out my return there is a discrepancy. Where do you get the total for Block 1. ? The total in Blcok 1 is more than my 3 W-2's. I am trying to figure out where the system got this total.