45*1.58+5.5*15.8的简便计算
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45*1.58+5.5*15.8的简便计算
你确定那是45和5.
45*1.58+5.5*15.8
=45×1.58+55×1.58
=(45+55)×1.58
=100×1.58
=158
45*1.58+5.5*15.8的简便计算
你确定那是45和5.
45*1.58+5.5*15.8
=45×1.58+55×1.58
=(45+55)×1.58
=100×1.58
=158