用简便方法计算25*25*25_数学解答

用简便方法计算25*25*25

人气：437 ℃　时间：2020-01-30 18:47:38

解答

25×25×25
=(20+5)×25×25
=[20×25+5×25]×25
=[500+125]×25
=625×25
=(600+25)×25
=600×25+25×25
=15000+625
=15625