9999×8+1111×28要用递等式,直接的答案不要,再帮我解决一题,56×295+56×6-56

问题描述:

9999×8+1111×28
要用递等式,直接的答案不要,
再帮我解决一题,56×295+56×6-56

9999×8+1111×28=1111*9*8+1111*28=1111*72+1111*28=1111*(72+28)=1111*100=111100

9999*8+1111*28
= 1111*9*8+1111*28
= 1111*(72+28)
= 111100
56*295+56*6-56
= 56*(295+6-1)
= 56*300
= 16800

=1111*72+1111*28
=1111(72+28)
=1111*100
=111100

9999×8+1111×28
=1111*72+1111*28
=1111(72+28)
=1111*100
=111100
56×295+56×6-56
=56(295+6-1)
=56*300
=16800
不带这样的,答完又加题,掉到后面了!

1/99+2/99+3/99...+98/99
=(1/99+98/99)+(2/99+97/99)+.+(49/99+50/99)
=1+1+...+1 (49个)
=49
9999*8+1111*28=
=9999*8+1111*18+1111*10
=9999*8+9999*2+1111*10
=9999*10+1111*10
=(9999+1111)*10
=111100

9999*8+1111*28(*代表乘)
=1111*9*8+1111*28
=1111*(72+28)
=111100