79 加法 20 等于多少？
79 + 20 = 99
79加法20 等于 99
竖式演算
验算
- 用减法验算：99 − 20 = 79
- 用减法验算：99 − 79 = 20
相关题目
79 + 19 = 98
79 + 21 = 100
79 + 22 = 101
79 + 18 = 97
79 + 23 = 102
79 + 17 = 96
79 + 24 = 103
79 + 16 = 95
78 + 20 = 98
80 + 20 = 100
77 + 20 = 97
81 + 20 = 101
76 + 20 = 96
82 + 20 = 102
83 + 20 = 103
75 + 20 = 95
1 + 98 = 99
2 + 97 = 99
3 + 96 = 99
4 + 95 = 99
5 + 94 = 99
6 + 93 = 99
8 + 1 = 9
61 + 1 = 62
22 + 57 = 79
65 + 24 = 89
6 + 22 = 28
43 + 41 = 84
11 × 9 = 99
100 - 1 = 99