两道简算题① 99*99+199② 6666*8+1111*52

问题描述:

两道简算题
① 99*99+199
② 6666*8+1111*52

(1)10000
(2)2830828

99*99+199
=99*99+99+100
=(99+1)*99+100
=9900+100
=10000
6666*8+1111*52
=6*1111*8+1111*52
=1111*(48+52)
=111100