Add: 13 + 15

What is 13 + 15?
What is 13 plus 15?
Addition 14 15 16 17 18
16 14+16 = 30 15+16 = 31 16+16 = 32 17+16 = 33 18+16 = 34
17 14+17 = 31 15+17 = 32 16+17 = 33 17+17 = 34 18+17 = 35
18 14+18 = 32 15+18 = 33 16+18 = 34 17+18 = 35 18+18 = 36
19 14+19 = 33 15+19 = 34 16+19 = 35 17+19 = 36 18+19 = 37
20 14+20 = 34 15+20 = 35 16+20 = 36 17+20 = 37 18+20 = 38
Addition 13.1 13.2 13.3 13.4 13.5 13.6
15.1 13.1+15.1 = 28.2 13.2+15.1 = 28.3 13.3+15.1 = 28.4 13.4+15.1 = 28.5 13.5+15.1 = 28.6 13.6+15.1 = 28.7
15.2 13.1+15.2 = 28.3 13.2+15.2 = 28.4 13.3+15.2 = 28.5 13.4+15.2 = 28.6 13.5+15.2 = 28.7 13.6+15.2 = 28.8
15.3 13.1+15.3 = 28.4 13.2+15.3 = 28.5 13.3+15.3 = 28.6 13.4+15.3 = 28.7 13.5+15.3 = 28.8 13.6+15.3 = 28.9
15.4 13.1+15.4 = 28.5 13.2+15.4 = 28.6 13.3+15.4 = 28.7 13.4+15.4 = 28.8 13.5+15.4 = 28.9 13.6+15.4 = 29
15.5 13.1+15.5 = 28.6 13.2+15.5 = 28.7 13.3+15.5 = 28.8 13.4+15.5 = 28.9 13.5+15.5 = 29 13.6+15.5 = 29.1
15.6 13.1+15.6 = 28.7 13.2+15.6 = 28.8 13.3+15.6 = 28.9 13.4+15.6 = 29 13.5+15.6 = 29.1 13.6+15.6 = 29.2