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

Toán Lớp 6: 4) /-24/-(-30)+(-24)-30+8 5)20-/-46/+(-25)-(-46)

Toán Lớp 6: 4) /-24/-(-30)+(-24)-30+8
5)20-/-46/+(-25)-(-46)

Comments ( 2 )

  1. 4)|-24|-(-30)+(-24)-30+8
    =24+30-24-30+8
    =(24-24)+(30-30)+8
    =0+0+8
    =8
    5)20-|-46|+(-25)-(-46)
    =20-46-25+46
    =(20-25)-(46-46)
    =-5-0
    =-5

  2. 4) -24 – (-30) + (-24) – 30 + 8
      = -24 + 30 + (-24) – 30 + 8
      = [-24 + (-24)] + (30 – 30) + 8
      = -48 + 0 + 8
      = -40
    5) 20 – (-46) + (-25) – (-46)
      = 20 + 46 + (-25) + 46
      = (-25 + 20) + (46 + 46)
      = -5 + 92
      = 87 
     

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

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