59 加法 31 等于多少？
59 + 31 = 90
59加法31 等于 90
竖式演算
验算
- 用减法验算：90 − 31 = 59
- 用减法验算：90 − 59 = 31
相关题目
59 + 30 = 89
59 + 32 = 91
59 + 29 = 88
59 + 33 = 92
59 + 28 = 87
59 + 34 = 93
59 + 35 = 94
59 + 27 = 86
58 + 31 = 89
60 + 31 = 91
57 + 31 = 88
61 + 31 = 92
56 + 31 = 87
62 + 31 = 93
55 + 31 = 86
63 + 31 = 94
1 + 89 = 90
2 + 88 = 90
3 + 87 = 90
4 + 86 = 90
5 + 85 = 90
6 + 84 = 90
47 + 3 = 50
31 + 49 = 80
41 + 68 = 109
93 + 31 = 124
15 + 94 = 109
30 + 88 = 118
5 × 18 = 90
3 × 30 = 90