21 加法 72 等于多少？
21 + 72 = 93
21加法72 等于 93
竖式演算
验算
- 用减法验算：93 − 72 = 21
- 用减法验算：93 − 21 = 72
相关题目
21 + 71 = 92
21 + 73 = 94
21 + 74 = 95
21 + 70 = 91
21 + 75 = 96
21 + 69 = 90
21 + 76 = 97
21 + 68 = 89
20 + 72 = 92
22 + 72 = 94
19 + 72 = 91
23 + 72 = 95
24 + 72 = 96
18 + 72 = 90
25 + 72 = 97
17 + 72 = 89
1 + 92 = 93
2 + 91 = 93
3 + 90 = 93
4 + 89 = 93
5 + 88 = 93
6 + 87 = 93
63 + 3 = 66
22 + 33 = 55
21 + 7 = 28
83 + 15 = 98
28 + 100 = 128
54 + 42 = 96
31 × 3 = 93
98 - 5 = 93