31 加法 68 等于多少？

31 + 67 = 98 31 + 69 = 100 31 + 66 = 97 31 + 70 = 101 31 + 65 = 96 31 + 71 = 102 31 + 64 = 95 31 + 72 = 103 30 + 68 = 98 32 + 68 = 100 29 + 68 = 97 33 + 68 = 101 28 + 68 = 96 34 + 68 = 102 35 + 68 = 103 27 + 68 = 95 1 + 98 = 99 2 + 97 = 99 3 + 96 = 99 4 + 95 = 99 5 + 94 = 99 6 + 93 = 99 42 + 3 = 45 11 + 54 = 65 71 + 28 = 99 32 + 61 = 93 100 + 98 = 198 53 + 100 = 153 3 × 33 = 99 100 - 1 = 99