Arithmetic series

Do better in math today

Get Started Now

Arithmetic series

An arithmetic series is the sum of an arithmetic sequence. In this lesson, we will learn how to solve problems using the arithmetic series formula.


• the sum of nn terms of an arithmetic series:
sn{s_n} = n2[2t1+(n1)d]\frac{n}{2}[2{t_1} + (n - 1)d]
= n2[t1+tn]\frac{n}{2}[{t_1} + {t_n}]
  • 3.
    The sum of the first n terms of an arithmetic series is sn=7n25n{s_n} = 7{n^2} - 5n .
Teacher pug

Arithmetic series

Don't just watch, practice makes perfect.

We have over 1110 practice questions in Math 8 for you to master.