19 加法 71 等于多少？
19 + 71 = 90
19加法71 等于 90
竖式演算
验算
- 用减法验算：90 − 71 = 19
- 用减法验算：90 − 19 = 71
相关题目
19 + 70 = 89
19 + 72 = 91
19 + 69 = 88
19 + 73 = 92
19 + 74 = 93
19 + 68 = 87
19 + 75 = 94
19 + 67 = 86
20 + 71 = 91
18 + 71 = 89
21 + 71 = 92
17 + 71 = 88
22 + 71 = 93
16 + 71 = 87
23 + 71 = 94
15 + 71 = 86
1 + 89 = 90
2 + 88 = 90
3 + 87 = 90
4 + 86 = 90
5 + 85 = 90
6 + 84 = 90
84 + 42 = 126
58 + 14 = 72
84 + 94 = 178
21 + 90 = 111
54 + 74 = 128
15 + 59 = 74
5 × 18 = 90
99 - 9 = 90