數學知識+ 有d難有d易

1.1672×32+{937+9923-15000+10]
=1672×32+[15000-[937+9923+10]
=1672×32+[15000-[10860+10]
=1672×32+[15000-10870]
=1672×32+4130
=53504+4130
=57634
答案：57634

2.[50000-29999+19999]-39999×5
=[20001+19999]-39999×5
=40000-39999×5
=1×5
=5
答案：5

3.[99999-11111-11111-11111-111111-111111-11111-11111]×10
=[88888-11111-11111-11111-11111-11111-11111]×10
=[77777-11111-11111-11111-11111-11111]×10
=[66666-11111-11111-11111-11111]×10
=[55555-11111-11111-11111]×10
=[44444-11111-11111]×10
=[33333-11111]×10
=22222×10
=222220
答案：222220

1) 49364
2) -159995
3) 666660
4) -70000

1.1672x32+(937+9923-15000+10)=57654

2. (50000-29999+19999)-21000x5=-65000

3. (99999-11111-11111-11111-11111-11111+11111+11111)x10=222220

1. 1672x32+(937+9923-15000+10=886
2.(50000-10000-5000)-21000x5=-70000
3.(99999-11111-11111-11111-11111-11111+11111+11111)x10=666660

2007-02-16 21:55:10 補充：
1. 1672x32+(937+9923-15000+10)=8862.(50000-10000-5000)-21000x5=-700003.(99999-11111-11111-11111-11111-11111+11111+11111)x10=666660 應該岩+

2007-02-16 21:57:16 補充：
1.系49374先岩...............

1. 49374
2. -159995
3. 666660

2007-02-24 17:50:02 補充：
2. -1046500