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

Toán Lớp 5: Tính nhanh 2011+2011+2011+2011+2011 nhân 6

Toán Lớp 5: Tính nhanh
2011+2011+2011+2011+2011 nhân 6

Comments ( 2 )

  1. 2011+2011+2011+2011+2011 x 6
    = 2011 + 2011 + 2011 + 2011 + ( 2011 x 6 )
    = ( 2011 x 4 ) + ( 2011 x 6 )
    = 2011 x ( 4 +6 )
     = 2011 x 10
    = 20110
     

  2. 2011 +2011 +2011 +2011 + 2011 x 6
    = 2011 x 10
    =20110

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

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