About the Standard Calculator
The standard calculator is designed for everyday arithmetic. Use it for quick addition, subtraction, multiplication, division, percentages, square roots, squares, reciprocals, and simple memory-based calculations.
When to Use It
This calculator is best for daily tasks such as checking totals, comparing prices, calculating discounts, splitting costs, or doing basic school and work calculations without advanced scientific functions.
Basic Operations
- Addition: combine two or more values into one total.
- Subtraction: find the difference between values.
- Multiplication: repeat a value by another value.
- Division: split a value into equal parts or find a ratio.
Using Percent and Memory
The percent key helps with discounts, tips, tax, and percentage-based changes. Memory controls let you store a value, recall it later, or add and subtract values from memory during a longer calculation.
How to Use the Standard Calculator
Enter the first number, choose an operation, enter the next number, then press equals. Previous calculations appear in the history box so you can review or copy recent results.
Worked Example and Limits
To calculate a 15% tip on 48, enter 48 x 15%, then use the result to add the tip to the bill. The standard calculator evaluates chained operations in entry order, so use the Scientific Calculator when parentheses and mathematical precedence are important.