Deductions & credits

I am awaiting the last of the three 1098s before inputting the info into Turbo Tax. Will they provide a worksheet to reflect the calculations conducted to determine the % of interest I am allowed to claim or are those calcs all done as side math and I will just hard code the results into the 1040 myself? I am unsure of how the Loan A, B, and C info will be entered into the 1040. Can you shed any light on this? thanks!