四年级下册数学拓展题:35/2525-36/2424

四年级下册数学拓展题:35/2525-36/2424

第1个回答  2019-03-08
35×2525-36×2424
=35x2525-(35x2424+1×2424)
=35×2525-35×2424-2424
=35×(2525-2424)-2424
=35×100+35-2424
=3500+35-2424
=3535-2424
=1111
第2个回答  2016-03-10
35/2525-36/2424
=(35×24)/(2525×24)-(36×25)/(2424×25)
=840/(101×25×24)-900/(101×25×24)
=-60/(101×25×24)
=-(5×12)/(101×5×5×12×2)
=-1/(101×5×2)
=-1/(101×10)
=-1/1010本回答被网友采纳