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 3: Tính nhanh 60 – 61 + 50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70

Toán Lớp 3: Tính nhanh
60 – 61 + 50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    60 – 61 + 50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    = (-1) + (-1) + (-1) + (-1) + (-1) + (-1) + 70
    = 6 * (-1) + 70
    = (-6) + 70
    = 64

  2. 60 – 61 + 50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =(-1)+50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =49+50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =99-50 –50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =49-50 – 51 + 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =-1-51+ 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =-52+ 40 – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =-12– 41 + – 41 + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =-53+(– 41) + 30 – 31 + 20 – 21 + 10 – 11 + 70
    =-94+ 30 – 31 + 20 – 21 + 10 – 11 + 70
    =-64 – 31 + 20 – 21 + 10 – 11 + 70
    =-95+ 20 – 21 + 10 – 11 + 70
    =-75+ 20 – 21 + 10 – 11 + 70
    =-51 -21 + 10 – 11 + 70
    =-72+10 – 11 + 70
    =-62-11+70
    =-73+70=-3
    <<<<<<<<<<<<<<<<<<<<<<<<<<XIN CTLHN NHA BN>>>>>>>>>>>>>>>>>>>>

Leave a reply

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