SumCalculator Blog

Insights and techniques for mathematical calculations

★Featured Article

📊

September 12, 2025

How Can I Calculate the Average Step by Step

A plain English guide to calculating averages by hand and in Excel with fast shortcuts, weighted averages, moving averages, and common fixes. Includes real examples.

Continue reading →

📚All Articles

📈

Sep 12, 2025

How Can I Calculate the Average Step by Step

A plain English guide to calculating averages by hand and in Excel with fast shortcuts, weighted averages, moving averages, and common fixes. Includes real examples.

🧮

Sep 6, 2025

How to Calculate Percentage Change Increase the Easy Way

A clear guide for real people on percentage change and percentage increase with step by step math, Excel formulas, common pitfalls, and quick tools you can use right now.

📈

Aug 24, 2025

Find Two Numbers from Sum and Product (Formula + Free Calculator)

Learn how to find two numbers when you know their sum and product. Includes formulas, step-by-step examples, Excel tips, and practical applications.

🧮

Aug 18, 2025

Sum of a Series Calculator: Plain-English Guide to Formulas, Examples & Quick Results

Learn how to sum arithmetic and geometric series fast. See formulas, worked examples, pitfalls, and use our calculators for finite and infinite series.

📈

Aug 14, 2025

Sum of Series Calculator How It Works and When to Use It

A plain English guide to arithmetic geometric and infinite series with step by step examples and practical tips for using a sum of series calculator plus helpful links to related math tools.