Add: 12 + 9

What is 12 + 9?
What is 12 plus 9?
Addition 13 14 15 16 17
10 13+10 = 23 14+10 = 24 15+10 = 25 16+10 = 26 17+10 = 27
11 13+11 = 24 14+11 = 25 15+11 = 26 16+11 = 27 17+11 = 28
12 13+12 = 25 14+12 = 26 15+12 = 27 16+12 = 28 17+12 = 29
13 13+13 = 26 14+13 = 27 15+13 = 28 16+13 = 29 17+13 = 30
14 13+14 = 27 14+14 = 28 15+14 = 29 16+14 = 30 17+14 = 31
Addition 12.1 12.2 12.3 12.4 12.5 12.6
9.1 12.1+9.1 = 21.2 12.2+9.1 = 21.3 12.3+9.1 = 21.4 12.4+9.1 = 21.5 12.5+9.1 = 21.6 12.6+9.1 = 21.7
9.2 12.1+9.2 = 21.3 12.2+9.2 = 21.4 12.3+9.2 = 21.5 12.4+9.2 = 21.6 12.5+9.2 = 21.7 12.6+9.2 = 21.8
9.3 12.1+9.3 = 21.4 12.2+9.3 = 21.5 12.3+9.3 = 21.6 12.4+9.3 = 21.7 12.5+9.3 = 21.8 12.6+9.3 = 21.9
9.4 12.1+9.4 = 21.5 12.2+9.4 = 21.6 12.3+9.4 = 21.7 12.4+9.4 = 21.8 12.5+9.4 = 21.9 12.6+9.4 = 22
9.5 12.1+9.5 = 21.6 12.2+9.5 = 21.7 12.3+9.5 = 21.8 12.4+9.5 = 21.9 12.5+9.5 = 22 12.6+9.5 = 22.1
9.6 12.1+9.6 = 21.7 12.2+9.6 = 21.8 12.3+9.6 = 21.9 12.4+9.6 = 22 12.5+9.6 = 22.1 12.6+9.6 = 22.2