79 加法 21 等于多少？
79 + 21 = 100
79加法21 等于 100
竖式演算
验算
- 用减法验算：100 − 21 = 79
- 用减法验算：100 − 79 = 21
相关题目
79 + 20 = 99
79 + 22 = 101
79 + 19 = 98
79 + 23 = 102
79 + 24 = 103
79 + 18 = 97
79 + 25 = 104
79 + 17 = 96
78 + 21 = 99
80 + 21 = 101
77 + 21 = 98
81 + 21 = 102
76 + 21 = 97
82 + 21 = 103
83 + 21 = 104
75 + 21 = 96
1 + 99 = 100
2 + 98 = 100
3 + 97 = 100
4 + 96 = 100
5 + 95 = 100
6 + 94 = 100
98 + 23 = 121
89 + 79 = 168
89 + 61 = 150
78 + 52 = 130
29 + 96 = 125
76 + 87 = 163
4 × 25 = 100
25 × 4 = 100