90 加法 80 等于多少？

90 + 79 = 169 90 + 81 = 171 90 + 78 = 168 90 + 82 = 172 90 + 83 = 173 90 + 77 = 167 90 + 84 = 174 90 + 76 = 166 89 + 80 = 169 91 + 80 = 171 92 + 80 = 172 88 + 80 = 168 93 + 80 = 173 87 + 80 = 167 94 + 80 = 174 86 + 80 = 166 70 + 100 = 170 71 + 99 = 170 72 + 98 = 170 73 + 97 = 170 74 + 96 = 170 75 + 95 = 170 47 + 61 = 108 13 + 78 = 91 7 + 55 = 62 24 + 39 = 63 26 + 56 = 82 82 + 81 = 163 2 × 85 = 170 17 × 10 = 170