42 加法 78 等于多少？
42 + 78 = 120
42加法78 等于 120
竖式演算
验算
- 用减法验算：120 − 78 = 42
- 用减法验算：120 − 42 = 78
相关题目
42 + 77 = 119
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41 + 78 = 119
43 + 78 = 121
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21 + 99 = 120
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25 + 95 = 120
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59 + 93 = 152
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15 × 8 = 120