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Making the world better, one answer at a time. Calculators help in making technical math problems easy. The three most common types of calculators are handheld calculators, printing calculators, and scientific calculators. Calculators help in making technical math problems easy. The three most common types of calculators are handheld calculators, printing calculators, and scientific calculators.
First, you need to know how a scientific calculator is different from other calculators. 1  There are three main types of calculators: basic, business, and scientific. You can't work chemistry, physics, engineering, or trigonometry problems on a basic or business calculator because they don't have functions you'll need to use. Scientific calculators include exponents, log, natural log (ln), trig functions, and memory. These functions are vital when you're working with scientific notation or any formula with a geometry component. Basic calculators can do addition, subtraction, multiplication, and division.