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

Toán Lớp 6: Bài 8: Tính hợp lý: 1) 74.(-41) – 41.26 2)-54.38+12.(-54) – 50.(-54) 3) 32 – 42.(-16)+48.5

Toán Lớp 6: Bài 8: Tính hợp lý:
1) 74.(-41) – 41.26
2)-54.38+12.(-54) – 50.(-54)
3) 32 – 42.(-16)+48.5

Comments ( 1 )

  1. Bai 8:
    1)74.(-41)–41.26
    =(-41).(74+26)
    =(-41).100
    =-4100
    2)(-54).38+12.(-54)–50.(-54)
    =(-54).(38+12-50)
    =(-54).0
    =0
    3) 32 – 42.(-16)+48.5
    =32-(-672)+240
    =944
     

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

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