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

Toán Lớp 8: Tìm ƯCLN các số sau a) 36 và 72 b) 24,96 và 120

Toán Lớp 8: Tìm ƯCLN các số sau
a) 36 và 72
b) 24,96 và 120

Comments ( 2 )

  1. $\text{# Chớp#}$
    a)$\text{Ư ( 36) = { 1,2,3,4, 6,9, 12,36}}$
    $\text{Ư ( 72) = { 1,2,3,4,6,8,9,12,18,24,3672}}$
    $\text{ƯC ( 36, 72)= { 1,2,4,6,12, 36}}$
    $\text{UCLN( 36,72= 36}$
    b) $\text{Ư ( 24)= { 1,2,3,4,6,8,12,24}}$
    $\text{Ư ( 96)= {1,2,3,4,6,8,12,16,24,32,48,96}}$
    $\text{Ư ( 120)= {1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120}}$
    $\text{ƯC( 24,96,120)={1,2,3,4,6,12,24}}$
    $\text{UCLN ( 24,96,120= 24}$

  2. a)
    36=2^2 .3^2
    72=2^3 .3^2
    Vậy ƯCLN(36,72)=2^2 .3^2=36
    b)
    24=2^3 .3
    96=2^5 .3
    120=2^3 .3.5
    Vậy ƯCLN(24,96,120)=2^3 .3=36.

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