7 加法 40 等于多少?
7 + 40 = 47
7加法40 等于 47
竖式演算
验算
- 用减法验算:47 − 40 = 7
- 用减法验算:47 − 7 = 40
相关题目
7 + 39 = 46
7 + 41 = 48
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7 + 42 = 49
7 + 37 = 44
7 + 43 = 50
7 + 44 = 51
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6 + 40 = 46
8 + 40 = 48
5 + 40 = 45
9 + 40 = 49
4 + 40 = 44
10 + 40 = 50
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2 + 45 = 47
3 + 44 = 47
4 + 43 = 47
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6 + 41 = 47
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