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

Toán Lớp 6: Tính tổng C=3 + 4 + 6 + 8 +…+ 2010

Toán Lớp 6: Tính tổng
C=3 + 4 + 6 + 8 +…+ 2010

Comments ( 1 )

  1. C = 3 + 4 + 6 + 8 + … + 2010
    = 3 + ( 2010 + 4 ) × [ ( 2010 – 4 ) : 2 + 1 ]
    = 3 + 2014 × [ 2006 : 2 + 1 ]
    = 3 + 2014 × [ 1003 + 1 ]
    = 3 + 2014 × 1004
    = 3 + 2 022 056
    = 2 022 059
    => C = 2 022 059
    @ Rin

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

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