Grade 8 Arithmetic Series Worksheet

Grade 8 Arithmetic Series Practice

Read each question carefully and answer to the best of your ability. Show all your work for short answer questions.

1. Which of the following is an arithmetic sequence?

2. What is the common difference of the arithmetic sequence: 5, 10, 15, 20...?

3. An arithmetic series is the   of the terms in an arithmetic sequence.

4. The formula for the nth term of an arithmetic sequence is a_n = a_1 + (n-1)d, where 'd' is the  .

5. Find the next three terms of the arithmetic sequence: 7, 11, 15, 19...

6. Find the 10th term of an arithmetic sequence where the first term is 3 and the common difference is 4.

7. The sequence 1, 3, 5, 7, ... is an arithmetic sequence.

8. The sum of an arithmetic series can be found using the formula S_n = n/2 * (a_1 + a_n).

9. Find the sum of the first 12 terms of the arithmetic series: 2, 5, 8, 11...

10. An auditorium has 20 rows of seats. The first row has 15 seats, and each subsequent row has 2 more seats than the row in front of it. How many seats are in the 20th row? What is the total number of seats in the auditorium?