59 加法 20 等于多少？
59 + 20 = 79
59加法20 等于 79
竖式演算
验算
- 用减法验算：79 − 20 = 59
- 用减法验算：79 − 59 = 20
相关题目
59 + 19 = 78
59 + 21 = 80
59 + 22 = 81
59 + 18 = 77
59 + 23 = 82
59 + 17 = 76
59 + 24 = 83
59 + 16 = 75
58 + 20 = 78
60 + 20 = 80
57 + 20 = 77
61 + 20 = 81
56 + 20 = 76
62 + 20 = 82
55 + 20 = 75
63 + 20 = 83
1 + 78 = 79
2 + 77 = 79
3 + 76 = 79
4 + 75 = 79
5 + 74 = 79
6 + 73 = 79
80 + 13 = 93
14 + 44 = 58
53 + 36 = 89
56 + 30 = 86
31 + 18 = 49
34 + 51 = 85
90 - 11 = 79
99 - 20 = 79