78 加法 31 等于多少？
78 + 31 = 109
78加法31 等于 109
竖式演算
验算
- 用减法验算：109 − 31 = 78
- 用减法验算：109 − 78 = 31
相关题目
78 + 30 = 108
78 + 32 = 110
78 + 29 = 107
78 + 33 = 111
78 + 28 = 106
78 + 34 = 112
78 + 35 = 113
78 + 27 = 105
77 + 31 = 108
79 + 31 = 110
76 + 31 = 107
80 + 31 = 111
75 + 31 = 106
81 + 31 = 112
74 + 31 = 105
82 + 31 = 113
9 + 100 = 109
10 + 99 = 109
11 + 98 = 109
12 + 97 = 109
13 + 96 = 109
14 + 95 = 109
25 + 91 = 116
55 + 50 = 105
53 + 27 = 80
5 + 87 = 92
33 + 9 = 42
40 + 70 = 110
40 + 45 = 85
56 + 31 = 87