84 加法 1 等于多少？
84 + 1 = 85
84加法1 等于 85
竖式演算
验算
- 用减法验算：85 − 1 = 84
- 用减法验算：85 − 84 = 1
相关题目
84 + 2 = 86
84 + 3 = 87
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84 + 5 = 89
84 + 6 = 90
84 + 7 = 91
84 + 8 = 92
84 + 9 = 93
83 + 1 = 84
85 + 1 = 86
82 + 1 = 83
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87 + 1 = 88
81 + 1 = 82
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80 + 1 = 81
1 + 84 = 85
2 + 83 = 85
3 + 82 = 85
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23 + 52 = 75
44 + 21 = 65
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