98 加法 42 等于多少？

98 + 41 = 139 98 + 43 = 141 98 + 40 = 138 98 + 44 = 142 98 + 39 = 137 98 + 45 = 143 98 + 38 = 136 98 + 46 = 144 97 + 42 = 139 99 + 42 = 141 96 + 42 = 138 100 + 42 = 142 95 + 42 = 137 94 + 42 = 136 93 + 42 = 135 92 + 42 = 134 40 + 100 = 140 41 + 99 = 140 42 + 98 = 140 43 + 97 = 140 44 + 96 = 140 45 + 95 = 140 78 + 23 = 101 77 + 33 = 110 96 + 9 = 105 88 + 13 = 101 58 + 97 = 155 66 + 49 = 115 35 × 4 = 140 7 × 20 = 140