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Mathematical Guides & Helpful Articles

Explore our in-depth guides to mastering percentages in business, finance, and daily life.


Mastering Percentage Increase and Decrease

Whether you're calculating a salary raise or a retail discount, understanding the formula for percentage change is vital. This guide breaks it down with real-world examples...

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How to Calculate Percentages in Excel & Google Sheets

Stop doing manual math in your spreadsheets. Learn the exact formulas to calculate totals, growth rates, and markups in Microsoft Excel and Google Sheets...

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How to Calculate Sales Tax and Discounts

Master the simple math behind everyday shopping. Learn how to quickly calculate tax additions and percentage discounts before you reach the checkout counter...

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How to Calculate Student Grade Percentages

Understanding your academic standing is crucial for success. Learn how to convert test scores into percentages and understand weighted grading scales for school and university...

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Percentage Difference vs. Percentage Change

Don't let misleading math ruin your reports. Learn the critical difference between these two formulas and when to use each one...

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How to Calculate Percentage of Marks

A must-read for students! Learn the exact steps to calculate your exam percentages for 10th, 12th, or University grades with easy-to-follow examples...

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