125×35×25用简便计算

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125×35×25用简便计算

125先乘以25再乘以35

125*(32+3)*25
=125*32*25+125*3*25
=125*8*4*25+125*75
=1000*100+(100-25)(100+25)
=100000+10000-625
=110000-625
=109375
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125×35×25
=5³×5×7×5²
=﹙5²﹚³×7
=15625×7
=109375