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

Toán Lớp 6: 16. (-5). (-2) . 3 (-4).(-7).2.(-5) (-135).72+16.(-135) + ( – 135 ) . 12

Toán Lớp 6: 16. (-5). (-2) . 3
(-4).(-7).2.(-5)
(-135).72+16.(-135) + ( – 135 ) . 12

Comments ( 2 )

  1. 16.(-5).(-2).3
    =(16.3).(-5.(-2))
    =48.10
    =480
    …………………………………………….
    (-4).(-7).2.(-5)
    =28 . (-10)
    =-280
    ……………………………………………….
    (-135).72+16.(-135)+(-135).12
    =(-135).(72+16+12)
    =(-135).100
    =-13500
     

  2. 16. (-5). (-2) . 3
    =(16.3)[(-5).(-2)]
    =48.10
    =480
                                                                            
    (-4).(-7).2.(-5)
    =[(-4).(-7)].[2.(-5)]
    =28.(-10)
    =-280
                                                                             
    (-135).72+16.(-135) + ( – 135 ) . 12
    =(-135).(72+16+12)
    =(-135).100
    =-13500
     

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

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