Sum of Arithmetic Sequences

Calculate the sum of the 100th term and 200th term of the sequence 6, 15, 24, 33, ... ...

A theater has 32 rows of seats. If there are 26 seats in the 1st row, 30 in the 2nd, 34 in the 3rd, and so on, how many seats are there in all? Assume the pattern continues.

• 2,791 seats

• 2,803 seats

• 2,816 seats

• 2.829 seats

It is the sum of definite number of terms of an arithmetic sequence

• Arithmetic Means

• Arithmetic Sequence

• Arithmetic Series

• Arithmetic Patterns

Which of the following is the correct formula for finding the Arithmetic Series?

• 149
• 11,200
• 5,600
• 140

Find the sum of the arithmetic series using a formula.

• 516, 240

• 516,242

• 116, 242

• 506, 242

• 8

• 5

• 3

• 1

The sequence 28, 34, 40, 46, 52, ..., 88 has 11 terms. Find the sum of the 11 terms.

• 550

• 638

• 610

• 288

Find the sum of the arithmetic series described:

2 + (-2) + (-6) + (-10)..., S₁₀

• -160

• -328

• -320

• -336

Find the sum.

24+48+72+...+480

*Hint: Find out what term number 480 is first. Then find the sum.*

• 5280

• 9576

• 10080

• 5040