2+10, 10+2 2+5+2+3, 5+2+2+3, 2+2+2+2+2+2, and 2+4+6 those are the ways to make 12.
If your talking multiplication, 1x12, 2x6, 3x4, 4x3, and 6x2.
if your talking subtraction, 12-0, 13-1, 14-2, 15-3, 16-4, 17-5, 18-6, and 19-7.
hope you have found my answers useful