80 加法 31 等于多少？
80 + 31 = 111
80加法31 等于 111
竖式演算
验算
- 用减法验算：111 − 31 = 80
- 用减法验算：111 − 80 = 31
相关题目
80 + 30 = 110
80 + 32 = 112
80 + 29 = 109
80 + 33 = 113
80 + 28 = 108
80 + 34 = 114
80 + 35 = 115
80 + 27 = 107
79 + 31 = 110
81 + 31 = 112
78 + 31 = 109
82 + 31 = 113
83 + 31 = 114
77 + 31 = 108
84 + 31 = 115
76 + 31 = 107
11 + 100 = 111
12 + 99 = 111
13 + 98 = 111
14 + 97 = 111
15 + 96 = 111
16 + 95 = 111
73 + 52 = 125
75 + 30 = 105
48 + 4 = 52
8 + 27 = 35
2 + 38 = 40
39 + 31 = 70
3 × 37 = 111
37 × 3 = 111