4 加法 80 等于多少？
4 + 80 = 84
4加法80 等于 84
竖式演算
验算
- 用减法验算：84 − 80 = 4
- 用减法验算：84 − 4 = 80
相关题目
4 + 79 = 83
4 + 81 = 85
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4 + 82 = 86
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4 + 84 = 88
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5 + 80 = 85
2 + 80 = 82
6 + 80 = 86
1 + 80 = 81
7 + 80 = 87
8 + 80 = 88
9 + 80 = 89
1 + 83 = 84
2 + 82 = 84
3 + 81 = 84
5 + 79 = 84
6 + 78 = 84
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1 + 24 = 25
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89 - 5 = 84