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

Toán Lớp 6: 40+15+(-10)+(-15) cần câu trả lời

Toán Lớp 6: 40+15+(-10)+(-15) cần câu trả lời

Comments ( 2 )

  1.     40+15+(-10)+(-15)
    = 40 + (-10) + [15+(-15)]
    = 50 + 0
    = 50
     
     

  2. 40+15+(-10)+(-15)
    =(40-10)+(15-15)
    =30+0
    =30
     

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