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

Toán Lớp 6: BCnn (8,13,30) BCnn(6,8,10) BCnn(33,44,55) BCnn(4,14,26)

Toán Lớp 6: BCnn (8,13,30)
BCnn(6,8,10)
BCnn(33,44,55)
BCnn(4,14,26)

Comments ( 1 )

  1. 1)
    BCNN(6,810)
    6=2.3
    8=2³
    10=2.5
    ⇒BCNN(6,8,10)=2³.3.5=120
    2 ) 
    Ta có :
    33=11×3
    44=11×4
     55=11×5
    ⇒BC nhỏ nhất của (33;44;55)=3×4×5×11=660
    3 ) 
     

    toan-lop-6-bcnn-8-13-30-bcnn-6-8-10-bcnn-33-44-55-bcnn-4-14-26

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

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