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: 142×12+142×18 49×365-39×365 4x18x25

Toán Lớp 4: 142×12+142×18
49×365-39×365
4x18x25

Comments ( 2 )

  1. $#Dứa$
    $\text{a, 142 x 12 + 142 x 18 }$
    $\text{= 142 x (12 + 18)}$
    $\text{= 142 x 30}$
    $\text{ = 4260}$
    $\text{b, 49 x 365 – 39 x 365}$
    $\text{ = 365 x (49 – 39)}$
    $\text{ = 365 x 10}$
    $\text{ = 3650}$
    $\text{4 x 18 x 25}$
    $\text{ = (4 x 25) x 18}$
    $\text{ = 100 x 18}$
    $\text{ = 1800}$

  2. a) 142×12+142×18 = 142x(12+18)
                                  = 142×30
                                  = 1260
    b) 49×365-39×365= 365x(49-39)
                                = 365x 10
                                = 3650
    c) 4x18x25= 4x25x18 = 100×18= 1800

Leave a reply

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

About Mỹ anh