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 6: Bài 2 : a) 515 + [72+(515)+(-32)] b) (-315) + (-400)+(-285) + 600

Toán Lớp 6: Bài 2 :
a) 515 + [72+(515)+(-32)]
b) (-315) + (-400)+(-285) + 600

Comments ( 2 )

  1. a) 515 + [72 + (-515) + (-32)]
    = 515 + 72 + (-515) + (-32)
    = [515 + (-515)] + [72 + (-32)]
    = 0 + 40
    = 40
    b) (-315) + (-400) + (-285) + 600
    = [(-315) + (-285)] + [600 + (-400)]
    = -600 + 200
    = -400

  2. @Bao
    a) 515+[72-515-32]
    =515+72-515-32
    =72-32
    =40
    b)(-315)+(-400)+(-285)+600
    =-315-400-285+600
    =(-315-285)-400+600
    =-600-400+600
    =-400
     

Leave a reply

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

About An Kim