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

Toán Lớp 6: (-7).(-2).8.(-5) 49-[15+(-6)] (-29).35+(-35).64+(-35)

Toán Lớp 6: (-7).(-2).8.(-5)
49-[15+(-6)]
(-29).35+(-35).64+(-35)

Comments ( 2 )

  1. (-7).(-2).8.(-5)
    =(-2).(-5).(-7) . 8
    =10.(-56)
    =-560
    ———
    49-[15+(-6)]
    =49-9
    =40
    ———
    (-29).35+(-35).64+(-35)
    =(-35).29+(-35).64+(-35)
    =(-35).(29+64+1)
    =-35.94
    =-3290
    @thew
     

  2. a) ( -7 ) . ( -2 ) . 8 . ( -5 )
    = ( -2 ) . ( -5 ) . ( -7 ) . 8
    = 10 . ( -56 )
    = -560
    __________________________________
    b) 49 – [ 15 + ( -6 ) ]
    = 49 – [ 15 – 6 ]
    = 49 – 9
    = 40
    __________________________________
    c) ( -29 ) . 35 + ( -35 ) . 64 + ( -35 )
    = ( -35 ) . 29 + ( -35 ) . 64 + ( -35 )
    = ( -35 ) . ( 29 + 64 + 1 )
    = -35 . 94  
    = -3290
     

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

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