78 加法 20 等于多少？
78 + 20 = 98
78加法20 等于 98
竖式演算
验算
- 用减法验算：98 − 20 = 78
- 用减法验算：98 − 78 = 20
相关题目
78 + 19 = 97
78 + 21 = 99
78 + 22 = 100
78 + 18 = 96
78 + 23 = 101
78 + 17 = 95
78 + 24 = 102
78 + 16 = 94
77 + 20 = 97
79 + 20 = 99
76 + 20 = 96
80 + 20 = 100
75 + 20 = 95
81 + 20 = 101
74 + 20 = 94
82 + 20 = 102
1 + 97 = 98
2 + 96 = 98
3 + 95 = 98
4 + 94 = 98
5 + 93 = 98
6 + 92 = 98
33 + 42 = 75
18 + 60 = 78
41 + 13 = 54
20 + 38 = 58
22 + 45 = 67
21 + 68 = 89
99 - 1 = 98
1 × 98 = 98