III. Basic Operations
1. Enter numbers: Use the number keypad to enter the numbers you need. 2. Select operators: Choose basic operators such as addition (+), subtraction (-), multiplication (*), or division (/) from the operator keypad. 3. Calculate: Press the equal key (=), and the calculator will perform the calculation based on the numbers and operators you entered, and display the result on the screen. IV. Advanced Functions Besides basic operations, the simple calculator may also have advanced functions such as percentage calculation, squares, and square roots. Please refer to the hints or help documents on the calculator interface for specific usage methods. V. Usage Skills 1. Fast input: Familiarize yourself with the calculator keyboard to speed up input and improve calculation efficiency. 2. Error correction: If there is an error during the calculation process, you can clear the input or use parentheses to adjust the order of operations. 3. Use memory function: Some calculators have memory functions that allow you to store and call previous calculation results. VI. Notes 1. Ensure that the calculator battery is charged to avoid affecting its use. 2. When performing complex calculations, make sure you understand the order of operations (parentheses, exponents, multiplication and division, addition and subtraction). 3. Avoid storing sensitive information on the calculator to prevent data leakage.
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