18.6×99的简便运算
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18.6×99的简便运算
18.6×99的简便运算
18.6×99的简便运算
18.6×99
=18.6×(100-1)
=18.6x100-18.6
=1860-18.6
=1841.4
18.6×99的简便运算
18.6×99的简便运算
18.6×99的简便运算
18.6×99
=18.6×(100-1)
=18.6x100-18.6
=1860-18.6
=1841.4