Add: 15 + 15

What is 15 + 15?
What is 15 plus 15?
Addition 16 17 18 19 20
16 16+16 = 32 17+16 = 33 18+16 = 34 19+16 = 35 20+16 = 36
17 16+17 = 33 17+17 = 34 18+17 = 35 19+17 = 36 20+17 = 37
18 16+18 = 34 17+18 = 35 18+18 = 36 19+18 = 37 20+18 = 38
19 16+19 = 35 17+19 = 36 18+19 = 37 19+19 = 38 20+19 = 39
20 16+20 = 36 17+20 = 37 18+20 = 38 19+20 = 39 20+20 = 40
Addition 15.1 15.2 15.3 15.4 15.5 15.6
15.1 15.1+15.1 = 30.2 15.2+15.1 = 30.3 15.3+15.1 = 30.4 15.4+15.1 = 30.5 15.5+15.1 = 30.6 15.6+15.1 = 30.7
15.2 15.1+15.2 = 30.3 15.2+15.2 = 30.4 15.3+15.2 = 30.5 15.4+15.2 = 30.6 15.5+15.2 = 30.7 15.6+15.2 = 30.8
15.3 15.1+15.3 = 30.4 15.2+15.3 = 30.5 15.3+15.3 = 30.6 15.4+15.3 = 30.7 15.5+15.3 = 30.8 15.6+15.3 = 30.9
15.4 15.1+15.4 = 30.5 15.2+15.4 = 30.6 15.3+15.4 = 30.7 15.4+15.4 = 30.8 15.5+15.4 = 30.9 15.6+15.4 = 31
15.5 15.1+15.5 = 30.6 15.2+15.5 = 30.7 15.3+15.5 = 30.8 15.4+15.5 = 30.9 15.5+15.5 = 31 15.6+15.5 = 31.1
15.6 15.1+15.6 = 30.7 15.2+15.6 = 30.8 15.3+15.6 = 30.9 15.4+15.6 = 31 15.5+15.6 = 31.1 15.6+15.6 = 31.2