An arithmetic series is a sum of the terms of an arithmetic sequence. There are two formulas for the sum, and we choose which to use depending on whether we are given the common difference or the nth term. In some problems, you must first use the formula for the sum and then the formula for the nth term. An arithmetic series can be written in concise form using sigma notation where Sigma is the Greek letter and it represents the sum. The examples involve problems of finding the first term, or the first three terms, or the sum of the series.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.