Toán Lớp 6: Tính
10(1/1.10+1/10.20+1/20.30+…+1/90.100)
Leave a reply
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.
Toán Lớp 6: Tính
10(1/1.10+1/10.20+1/20.30+…+1/90.100)
Comments ( 2 )
=10/1.10+10/10.20+10/20.30+…+10/90.100
=(10/1.10)+(10/10.20+10/20.30+…+10/90.100)
=(10/10)+(1/10-1/20+1/20-1/30+…+1/90-1/100)
=1+(1/10-1/100)
=1+1/10-1/100
=100/100+10/100-1/100
=109/100