87 加法 89 等于多少？

87 + 88 = 175 87 + 90 = 177 87 + 87 = 174 87 + 91 = 178 87 + 92 = 179 87 + 86 = 173 87 + 93 = 180 87 + 85 = 172 86 + 89 = 175 88 + 89 = 177 85 + 89 = 174 89 + 89 = 178 84 + 89 = 173 90 + 89 = 179 83 + 89 = 172 91 + 89 = 180 76 + 100 = 176 77 + 99 = 176 78 + 98 = 176 79 + 97 = 176 80 + 96 = 176 81 + 95 = 176 87 + 69 = 156 29 + 83 = 112 71 + 59 = 130 98 + 47 = 145 58 + 78 = 136 74 + 69 = 143 8 × 22 = 176 11 × 16 = 176