Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 4: Tính bằng 2 cách. ( 1/3 + 2/5 ) x 3/4

Toán Lớp 4: Tính bằng 2 cách. ( 1/3 + 2/5 ) x 3/4

Comments ( 2 )

  1. Cách 1 :
    (1/3 + 2/5) × 3/4
    = 11/15 × 3/4
    = 11/20
    Cách 2 :
    (1/3 + 2/5) × 3/4
    = 1/3 × 3/4 + 2/5 × 3/4
    = 1/4 + 3/10
    = 11/20
     

  2. Cách 1 :
    ( 1/3 + 2/5 ) x 3/4
    = 11/15 x 3/4  
    = 11/20
    Cách 2
    ( 1/3 + 2/5 ) x 3/4
    = 1/3 x 3/4 + 2/5 x 3/4
    =1/4 + 3/10
    =5/20 + 6/20
    =11/20  

Leave a reply

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