101x98简便计算的3种

101x98
=(100+1)×98
=100×98+1×98
=9800+98
=9898

101x98
=101×(100-2)
=101×100-101×2
=10100-202
=9898

101x98
=(100+1)(100-2)
=100×100-100×2+1×100-1×2
=10000-200+100-2
=9800+98
=9898本回答被网友采纳

101x98
=(100+1)x98
=100x98+98
=9800+98
=9898

101x98
=101x(100-2)
=10100-202
=9898

101x98
=(100+1)x(100-2)
=10000-200+100-2
=10000-100-2
=9900-2
=9898