20 加法 78 等于多少？
20 + 78 = 98
20加法78 等于 98
竖式演算
验算
- 用减法验算：98 − 78 = 20
- 用减法验算：98 − 20 = 78
相关题目
20 + 77 = 97
20 + 79 = 99
20 + 76 = 96
20 + 80 = 100
20 + 75 = 95
20 + 81 = 101
20 + 74 = 94
20 + 82 = 102
19 + 78 = 97
21 + 78 = 99
22 + 78 = 100
18 + 78 = 96
23 + 78 = 101
17 + 78 = 95
24 + 78 = 102
16 + 78 = 94
1 + 97 = 98
2 + 96 = 98
3 + 95 = 98
4 + 94 = 98
5 + 93 = 98
6 + 92 = 98
25 + 13 = 38
3 + 86 = 89
13 + 31 = 44
14 + 53 = 67
2 + 17 = 19
15 + 64 = 79
49 × 2 = 98
2 × 49 = 98