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

Toán Lớp 6: 13.75+13.25-140 50 – [ 30-(6-2)^2}

Toán Lớp 6: 13.75+13.25-140
50 – [ 30-(6-2)^2}

Comments ( 2 )

  1. Giải đáp:
     a) 
    13 . 75 + 13 . 25 – 140
    = 13 . (75 + 25) – 140
    = 13 . 100 – 140
    = 1300 – 140
    = 1160
    b)
    50 – [30 – (6 – 2)^2]
    = 50 – [30 – 4^2]
    = 50 – [30 – 16]
    = 50 – 30 + 16
    = 20 + 16
    = 36
     

  2. a,13.75+13.25+140
    =13(25+75)-140
    =13.100-140
    =1300-140
    =1160
    b,50-[30-(6-2)^2]
    =50-[30-4^2]
    =50-[30-16]
    =50-14
    =36
     

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