题目

竖式计算 ①56×65= ②405×78= ③780×140= ④326÷51= ⑤1650÷59= ⑥5841÷83= 答案：解：①56×65=3640 ②405×78=31590 ③780×140=109200 ④326÷51=6······20 ⑤1650÷59=27······57 ⑥5841÷83= 70······31

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