90 加法 80 等于多少？
90 + 80 = 170
90加法80 等于 170
竖式演算
验算
- 用减法验算：170 − 80 = 90
- 用减法验算：170 − 90 = 80
相关题目
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
17 + 43 = 60
39 + 56 = 95
40 + 69 = 109
63 + 56 = 119
14 + 48 = 62
55 + 7 = 62
2 × 85 = 170
85 × 2 = 170