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数学
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752×1.25+4.45×12.5+0.035×125.
人气:270 ℃ 时间:2020-02-05 14:35:46
解答
752×1.25+4.45×12.5+0.035×125,
=752×1.25+44.5×1.25+3.5×1.25,
=(752+44.5+3.5)×1.25,
=800×1.25,
=1000.
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问:用乘法运算定律计算下面各题.752×1.25+4.45×12.5+0.035×
752×1.25+4.45×12.5+0.035×125.
2×1.25+4.45×12.5+0.035(简便计算)
用乘法分配律计算下面的题:(1)752×1.25+4.45×12.5+0.035×125(2)0.42×160+36×1.6
752*1.25+4145*12.5+0.0035*125=?
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