1. Open the calculator
First, we need to turn on the calculator. Calculators usually have a switch button, just turn it on.
2. Digital input
There are numeric keyboards on the calculator, and we can use these keyboards to input numbers. For example, to enter the number 5, just press the 5 key on the numeric keypad.
3. Four operations
The calculator can perform four operations of addition, subtraction, multiplication and division. Let's take addition as an example:
① Enter the first number. Press the corresponding number key on the numeric keypad, for example, enter the number 5.
② Enter the plus sign. There is usually a plus button on the calculator. Press it.
③ Enter the second number. Press the corresponding number key on the numeric keypad, for example, enter the number 3.
4 press the equal sign. There is an equal sign button on the calculator. Press it and the calculator will automatically calculate the result.
It's all the same except addition, subtraction, multiplication and division. Just follow the order of the corresponding operation keys and numeric keys.
4. Clear operation
If you make a mistake or want to recalculate, we can use the clear button on the calculator. There are usually two kinds of clear buttons: clear the current input and clear all. Pressing the Clear Current Input button will delete the last input number or operator, while pressing the Clear All button will clear all inputs of the calculator.
5. Other functions
In addition to the basic four operations, the calculator can also perform other common calculations, such as square, root, percentage calculation and so on. These functions are usually on the function keys of the calculator, and corresponding operations can be carried out when necessary.
final result
Calculator is a very practical tool. Whether in study, work or daily life, we can use calculators to perform various mathematical operations. Through the above introduction, I believe everyone has a clearer understanding of the use of calculators. I hope this article is helpful to you!