There are two taxes on an early withdrawal: regular income tax (which applies to everyone) and the penalty tax (for early distributions). These get rolled into one final tax number on your 1040.
You may have had 10% withheld from the distribution, which will offset your the total tax number above. This would be rolled into your "Federal Income Taxes Withheld" amount on line 64.
10% withholding usually won't quite cover the effect of the early distribution.
