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 7: Tính một cách hợp lí a , 25 – ( – 11 ) b , – 17 + 10 : ( – 2 ) c , 25 – ( 15 – 8 + 3 ) + ( 12 – 9 + 10 ) d , 3^3 . 9^2 – 5^2 . 9 + 18 :

Toán Lớp 7: Tính một cách hợp lí
a , 25 – ( – 11 )
b , – 17 + 10 : ( – 2 )
c , 25 – ( 15 – 8 + 3 ) + ( 12 – 9 + 10 )
d , 3^3 . 9^2 – 5^2 . 9 + 18 : 6

Comments ( 2 )

  1. Giải đáp:
    a, 25 – ( – 11 ) = 25 + 11 = 36
    b, – 17 + 10 : ( – 2 ) = – 17 – 5 = – 22
    c, 25 – ( 15 – 8 + 3 ) + ( 12 – 9 + 10 )
    = 25 – 15 + 8 – 3 + 12 – 9 + 10
    = 28
    d, 3^3 . 9^2 – 5^2 . 9 + 18 : 6
    = 27 . 81 – 25 . 9 + 3
    = 2187 – 225 + 3
    = 1965
    #AkiSha2007
     

  2. a, 25-(-11)=25+11=36
    b, -17+10:(-2)=-17+(-5)=-22
    c, 25-(15-8+3)+(12-9+10)=25-13+10=28
    d, 3^3. 9^2- 5^2.9+18:6=27.81-25.9+18:6=2187-225+3=1962+3=1965
    Chúc bạn học tốt! anhsangsoiduong.vn!
     
     

Leave a reply

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

About Chi