47 加法 81 等于多少？

47 + 80 = 127 47 + 82 = 129 47 + 83 = 130 47 + 79 = 126 47 + 84 = 131 47 + 78 = 125 47 + 85 = 132 47 + 77 = 124 46 + 81 = 127 48 + 81 = 129 49 + 81 = 130 45 + 81 = 126 50 + 81 = 131 44 + 81 = 125 51 + 81 = 132 43 + 81 = 124 28 + 100 = 128 29 + 99 = 128 30 + 98 = 128 31 + 97 = 128 32 + 96 = 128 33 + 95 = 128 86 + 91 = 177 6 + 47 = 53 54 + 70 = 124 18 + 4 = 22 74 + 18 = 92 90 + 36 = 126 16 × 8 = 128 64 × 2 = 128