Welcome to our calculator tutorial. A calculator is an essential electronic device that performs mathematical operations quickly and accurately. Today we will explore the basic functions of a standard calculator, including addition, subtraction, multiplication, division, and other fundamental operations.
Now let's see how to perform addition and subtraction. For addition, we'll calculate twenty-five plus seventeen. First, we enter two five, then press the plus button, enter one seven, and press equals. The result is forty-two. For subtraction, fifty minus twenty-three equals twenty-seven.
Let's explore multiplication and division. For multiplication, we'll calculate eight times seven. Press eight, then the multiplication button, then seven, and equals. The result is fifty-six. For division, eighty-four divided by twelve equals seven. These operations follow the same pattern as addition and subtraction.
Calculators also have special functions. The clear button resets the display to zero. The percentage button helps calculate percentages. For example, to find twenty percent of one hundred fifty, enter one fifty, multiply, twenty, percent, equals. The result is thirty. The plus-minus button changes the sign of numbers, and the decimal point allows for precise calculations.
To summarize what we have learned about calculator functions: Calculators are powerful tools that perform mathematical operations quickly and accurately. The basic functions include addition, subtraction, multiplication, and division. Special functions like percentage calculations, clear button, and sign changes enhance their usability. Remember to follow the proper sequence of entering numbers, selecting operations, and pressing equals. Modern calculators have become essential tools in education, business, and our daily lives.