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

Toán Lớp 5: các bạn giúp mik 3/10 2/5 ><=

Toán Lớp 5: các bạn giúp mik
3/10 2/5 ><=

Comments ( 2 )

  1. $\frac{3}{10}$ = 0,3       
    $\frac{2}{5}$ = $\frac{4}{10}$ = 0,4
    ⇒ 0,4 > 0,3
    ⇒ $\frac{3}{10}$ < $\frac{2}{5}$ 

  2. 3/10 …. 2/5 
    Ta quy đồng :
    3/10=3/10 ( giữ nguyên )
    2/5=(2xx2)/(5xx2)=4/10
    3/10 … 4/10
    3/10 < 4/10 ( 3<4 )
    Vậy 3/10 <2/5
     

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