如题所述
第1个回答 2013-09-05
解23×25
=(24-1)×(24+1)
=24²-1
=576-1
=575
=(24-1)×(24+1)
=24²-1
=576-1
=575
第2个回答 2013-09-05
解:
23×25
=(24-1)x25
=24x25-25
=6x(4x25)-25
=6x100-25
=600-25
=575本回答被网友采纳
23×25
=(24-1)x25
=24x25-25
=6x(4x25)-25
=6x100-25
=600-25
=575本回答被网友采纳