1999999+199999+19999+1999+199+19用巧算算怎么算?

2024-11-21 19:21:35
推荐回答(3个)
回答1:

12345请问5
LV.42012-12-02
关注
1999999+199999+19999+1999+199+19
=(1999999+1)+(199999+1)+(19999+1)+(1999+1)+(199+1)+(19+1)-6
=2000000+200000+20000+2000+200+20-6
=2200000+20000+2000+200+20-6
=2220000+2000+200+20-6
=2222000+200+20-6
=2222200+20-6
=2222220-6
=2222214
0 22

毛高山
LV.52012-12-02
关注
(2000000+200000+20000+

回答2:

1999999+199999+19999+1999+199+19
=(1999999+1)+(199999+1)+(19999+1)+(1999+1)+(199+1)+(19+1)-6
=2000000+200000+20000+2000+200+20-6
=2200000+20000+2000+200+20-6
=2220000+2000+200+20-6
=2222000+200+20-6
=2222200+20-6
=2222220-6
=2222214

回答3:

(2000000+200000+20000+2000+200+20)-6=2222220-6=2222214