Tax form 1040 for 2018. Looking how to calculate line 11a.

10	Taxable income. Subtract lines 8 and 9 from line 7. If zero or less, enter -0- . . . .					10
11	a Tax (see inst) (check if any from: 1 Form(s) 8814 2 Form 4972 3 ) b Add any amount from Schedule 2 and check here . . . . . . . . . . . . . . . . .					11
12	a Child tax credit/credit for other dependents b Add any amount from Schedule 3 and check here . . . . . . . . . . . . . . . . .					12