8 加法 8 等于多少？

8 + 7 = 15 8 + 9 = 17 8 + 6 = 14 8 + 10 = 18 8 + 11 = 19 8 + 5 = 13 8 + 12 = 20 8 + 4 = 12 7 + 8 = 15 9 + 8 = 17 6 + 8 = 14 10 + 8 = 18 11 + 8 = 19 5 + 8 = 13 12 + 8 = 20 4 + 8 = 12 1 + 15 = 16 2 + 14 = 16 3 + 13 = 16 4 + 12 = 16 5 + 11 = 16 6 + 10 = 16 36 + 9 = 45 86 + 32 = 118 82 + 42 = 124 30 + 77 = 107 16 + 64 = 80 83 + 54 = 137 52 - 36 = 16 47 - 31 = 16