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: tính nhanh; 45 x 20 + 60 x 50 + 6 x 350 = gấp nhanh nhé

Toán Lớp 6: tính nhanh;
45 x 20 + 60 x 50 + 6 x 350 =
gấp nhanh nhé

Comments ( 2 )

  1. 45 × 20 + 60 × 50 + 6 × 350
    = 45 × 20 + 20 × 3 × 50 + 6 × 20 × 17,5
    = 45 × 20 + 20 × 150 + 20 × 105
    = 20 × (45 + 150 + 105)
    = 20 × 300
    = 6000
     

  2. 45 × 20 + 60 × 50 + 6 × 350
    =45×20+3×20×50+6×17,5×20
    =45×20+20×150+105×20
    =20×(45+150+105)
    =20×300
    =6000

Leave a reply

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