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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: 1+2-3-4+5+6-7-8+-+1998-1999-2000+2001

Toán Lớp 6: 1+2-3-4+5+6-7-8+….+1998-1999-2000+2001

Comments ( 2 )

  1. Lời giải chi tiết:
    1+2-3-4+5+6-7-8+…+1998-1999-2000+2001
    =1+(2-3-4+5)+(6-7-8+9)+…+(1998-1999-2000+2001)
    =1+0+0+…+0
    =1

  2. Giải đáp:
    1+2-3-4+5+6-7-8+….+1998-1999-2000+2001 
    = 1 + (2- 3-4 + 5)+(6-7-8 + 9)+…+(1998-1999-2000+2001)
    = 1 +  0                    + 0                   +  … + 0
    = 1 

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222-9+11+12:2*14+14 = ? ( )