125 25的和乘16简便方法
åå¼
=ï¼125+25ï¼x16
=125x16+25x16
=125x8x2+25x4x4
=1000x2+100x4
=2000+400
=2400
=ï¼125+25ï¼x16
=125x16+25x16
=125x8x2+25x4x4
=1000x2+100x4
=2000+400
=2400
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第1个回答 2015-11-12
不详