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四万乘八万是多少
更新时间: 2020-10-27 00:00:00  

三十二亿,即:40000×80000=3200000000,用科学计数法表示是三十二亿是3.2×10。

乘法交换律:两个数相乘,交换两个因数的位置,积不变。

用字母表示:a×b=b×a。

乘法结合律:三个数相乘,先乘前两个数,或者先乘后两个数,积不变。

用字母表示:(a×b)×c=a×(b×c)。

关键词: 多少

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