noun

A calculator is a special device that helps you do math problems quickly and easily. It has buttons that you can press to add, subtract, multiply, or divide numbers. So if you need to do a big math problem, you can use a calculator to help you figure out the answer. It's like having a little helper who can do math for you!

Example

1. My math teacher always reminds us to bring our calculators to class.
2. I use a calculator to check my work when I'm doing complicated math problems.
3. The calculator helped me solve the math problem in just a few seconds.