64 加法 81 等于多少？

64 + 80 = 144 64 + 82 = 146 64 + 83 = 147 64 + 79 = 143 64 + 84 = 148 64 + 78 = 142 64 + 85 = 149 64 + 77 = 141 65 + 81 = 146 63 + 81 = 144 66 + 81 = 147 62 + 81 = 143 67 + 81 = 148 61 + 81 = 142 68 + 81 = 149 60 + 81 = 141 45 + 100 = 145 46 + 99 = 145 47 + 98 = 145 48 + 97 = 145 49 + 96 = 145 50 + 95 = 145 83 + 51 = 134 42 + 9 = 51 87 + 50 = 137 19 + 42 = 61 63 + 71 = 134 34 + 39 = 73 29 × 5 = 145 5 × 29 = 145