79 加法 49 等于多少？
79 + 49 = 128
79加法49 等于 128
竖式演算
验算
- 用减法验算：128 − 49 = 79
- 用减法验算：128 − 79 = 49
相关题目
79 + 48 = 127
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2 × 64 = 128
32 × 4 = 128