1999999+199999+19999+1999+199+19用巧算算怎么算?
6个回答
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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+
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+
展开全部
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
=(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
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(2000000+200000+20000+2000+200+20)-6=2222220-6=2222214
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展开全部
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
=(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
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你对这个回答的评价是?
展开全部
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
=(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
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你对这个回答的评价是?
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