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 5: 4/5 + 4/45 + 4/117 + =- + 4/97×101

Home/ Toán Lớp 5: 4/5 + 4/45 + 4/117 + =- + 4/97×101

Toán Lớp 5: 4/5 + 4/45 + 4/117 + =- + 4/97×101

Tháng Tư 5, 2023 Toán học 1 Comment 0 views

Toán Lớp 5: 4/5 + 4/45 + 4/117 + ……………. + 4/97×101

Comments ( 1 )

  1. hoaiphuong85
    hoaiphuong85
    5 Tháng Tư, 2023 at 5:56 chiều
    Reply
    $\dfrac{4}{5}$ + $\dfrac{4}{45}$ + … + $\dfrac{4}{97 × 101}$
    = $\dfrac{4}{1×5}$ + $\dfrac{4}{5×9}$ + … + $\dfrac{4}{97×101}$
    = 1 – $\dfrac{1}{5}$ + $\dfrac{1}{5}$ – $\dfrac{1}{9}$ + …+ $\dfrac{1}{97}$ – $\dfrac{1}{101}$
    = 1 – $\dfrac{1}{101}$
    = $\dfrac{100}{101}$
     

Leave a reply

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

Thanh THương

About Thanh THương