Question

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

Answer 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+

Answer 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

Answer 3

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

Answer 4

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

Answer 5

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