Summarize this article:
Last updated on September 11, 2025
Calculators are reliable tools for solving simple mathematical problems and advanced calculations like trigonometry. Whether you’re cooking, tracking BMI, or planning a construction project, calculators will make your life easy. In this topic, we are going to talk about the sum of series calculators.
A sum of series calculator is a tool to find the sum of a series of numbers, whether they are arithmetic, geometric, or other types of series.
This calculator simplifies the process of adding up the terms of a series, making it easier and faster, saving time and effort.
Given below is a step-by-step process on how to use the calculator:
Step 1: Enter the details of the series: Input the first term, common difference (or ratio), and the number of terms into the given fields.
Step 2: Click on calculate: Click on the calculate button to find the sum of the series.
Step 3: View the result: The calculator will display the result instantly.
To calculate the sum of a series, there are simple formulas that the calculator uses.
For an arithmetic series, the formula is: Sum = n/2 × (2a + (n - 1)d) Where: n = number of terms a = first term d = common difference For a geometric series, the formula is: Sum = a × (1 - r^n) / (1 - r) Where: a = first term r = common ratio n = number of terms These formulas allow us to calculate the total of a series quickly and accurately.
When we use a sum of series calculator, there are a few tips and tricks that we can use to make it a bit easier and avoid mistakes:
We may think that when using a calculator, mistakes will not happen. But it is possible for errors to occur when using a calculator.
What is the sum of the first 10 terms of an arithmetic series where the first term is 3 and the common difference is 4?
Use the formula: Sum = n/2 × (2a + (n - 1)d) Sum = 10/2 × (2 × 3 + (10 - 1) × 4) Sum = 5 × (6 + 36) Sum = 5 × 42 Sum = 210
By inputting the values into the arithmetic series formula, we calculate the sum of the first 10 terms as 210.
Find the sum of the first 5 terms of a geometric series with a first term of 2 and a common ratio of 3.
Use the formula: Sum = a × (1 - r^n) / (1 - r) Sum = 2 × (1 - 3^5) / (1 - 3) Sum = 2 × (1 - 243) / (-2) Sum = 2 × (-242) / (-2) Sum = 2 × 121 Sum = 242
Using the geometric series formula, the sum of the first 5 terms is calculated as 242.
Calculate the sum of the first 8 terms of an arithmetic series with a first term of 7 and a common difference of 5.
Use the formula: Sum = n/2 × (2a + (n - 1)d) Sum = 8/2 × (2 × 7 + (8 - 1) × 5) Sum = 4 × (14 + 35) Sum = 4 × 49 Sum = 196
The sum of the first 8 terms of the arithmetic series is found to be 196 using the formula.
What is the sum of the first 6 terms of a geometric series with a first term of 5 and a common ratio of 2?
Use the formula: Sum = a × (1 - r^n) / (1 - r) Sum = 5 × (1 - 2^6) / (1 - 2) Sum = 5 × (1 - 64) / (-1) Sum = 5 × (-63) / (-1) Sum = 5 × 63 Sum = 315
By applying the geometric series formula, the sum of the first 6 terms is calculated as 315.
Find the sum of the first 12 terms of an arithmetic series with a first term of 10 and a common difference of 3.
Use the formula: Sum = n/2 × (2a + (n - 1)d) Sum = 12/2 × (2 × 10 + (12 - 1) × 3) Sum = 6 × (20 + 33) Sum = 6 × 53 Sum = 318
The sum of the first 12 terms of the arithmetic series is calculated as 318 using the formula.
Seyed Ali Fathima S a math expert with nearly 5 years of experience as a math teacher. From an engineer to a math teacher, shows her passion for math and teaching. She is a calculator queen, who loves tables and she turns tables to puzzles and songs.
: She has songs for each table which helps her to remember the tables