55 加法 73 等于多少？
55 + 73 = 128
55加法73 等于 128
竖式演算
验算
- 用减法验算：128 − 73 = 55
- 用减法验算：128 − 55 = 73
相关题目
55 + 74 = 129
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2 × 64 = 128
64 × 2 = 128