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

Toán Lớp 6: tính nhanh -37 .48 + ( -48 ) . 64

Toán Lớp 6: tính nhanh -37 .48 + ( -48 ) . 64

Comments ( 2 )

  1. Giải đáp:
    -36.48+(-48).64
    = -36.48 + 48.(-64)
    = 48. [(-36 )+( – 64)]
    = 48. (-100)
    = -4800

  2. – 37 . 48 + ( – 48 ) . 64
    = 37 . ( – 48 ) + ( – 48 ) . 64
    = ( – 48 ) . ( 37 + 64 )
    = ( – 48 ) . 101
    = – 4848

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

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