How-To Guides

Introduction: Understanding Infinity and Its Use on a Calculator Infinity is a concept in mathematics that represents a value that is larger than any finite number. While calculators cannot physically display infinity, they can approximate it or represent it using symbols such as INF (infinity), E99, or Overflow. Whether you’re working with limits in calculus, … Read more

Introduction: What is a Logarithm, and Why is It Important? A logarithm is a fundamental mathematical concept used to solve equations involving exponential growth or decay. It’s the inverse operation of exponentiation, meaning it answers the question: To what power must a number (called the base) be raised to obtain a certain value? For instance, … Read more

Introduction Calculating the square root without a calculator is easier than you think. Whether you’re tackling a math exam or just want to sharpen your mental math skills, knowing how to find the square root manually is a useful skill. In this guide, we’ll show you how to find square roots using easy methods like … Read more

If you’re preparing for the Graduate Record Examination (GRE), one of the most critical questions you’ll have is: Can you use a calculator on the GRE? Understanding the calculator policy is crucial because it influences your test strategy. Whether you’re wondering about graphing calculators, scientific calculators, or even home testing, this guide covers everything you … Read more

If you’re preparing for the ASVAB (Armed Services Vocational Aptitude Battery) test, one of the most common questions you’ll have is: Can you use a calculator on the ASVAB? . Understanding the answer to this question is crucial, as calculators are not permitted during the ASVAB, but preparing for this rule is key to doing … Read more

What is a Financial Calculator and Why You Need One A financial calculator is an essential tool for anyone who needs to perform complex financial calculations. Whether you’re calculating loan payments, interest rates, or investment returns, this device simplifies the process and ensures accuracy. By mastering how to use a financial calculator, you can gain … Read more

Why You Need to Know How to Put Fractions in a Calculator Fractions are essential in everyday life—whether you’re calculating ingredients for a recipe or solving math homework. But if you don’t know how to enter them into your calculator properly, you might find yourself stuck. In this guide, we’ll walk you through how to … Read more

How to Use a Graphing Calculator  You didn’t buy a fancy brick—you bought a tool. This guide shows you how to use a graphing calculator to plot functions, set the window, analyze intersections, and run basic statistics. You’ll first learn the universal steps, then see quick brand-specific notes for TI-84, Casio fx-9860GIII, and HP Prime … Read more