11 加法 80 等于多少？
11 + 80 = 91
11加法80 等于 91
竖式演算
验算
- 用减法验算：91 − 80 = 11
- 用减法验算：91 − 11 = 80
相关题目
11 + 79 = 90
11 + 81 = 92
11 + 78 = 89
11 + 82 = 93
11 + 83 = 94
11 + 77 = 88
11 + 84 = 95
11 + 76 = 87
10 + 80 = 90
12 + 80 = 92
13 + 80 = 93
9 + 80 = 89
14 + 80 = 94
8 + 80 = 88
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1 + 90 = 91
2 + 89 = 91
3 + 88 = 91
4 + 87 = 91
5 + 86 = 91
6 + 85 = 91
41 + 1 = 42
2 + 97 = 99
13 + 34 = 47
34 + 14 = 48
12 + 44 = 56
20 + 59 = 79
97 - 6 = 91
92 - 1 = 91