# Online operations with numbers. 3 calculators available

## Three online calculators available: [+] Rounding off numbers [+] Adding numbers [+] Subtracting Numbers

### Free calculators, calculations followed by detailed step-by-step explanations:

- The calculators that are running these mathematical operations are free, all the calculations performed by the visitors are followed by step-by-step explanations.
- These detailed explanations that follow all the calculations run by our visitors can be used also as an instrument of learning by seeing all needed examples, making the calculators that are listed below not just an instrument of getting the result / validating the result.
- The mathematical operations that can be run automatically are:
- 1. Adding and subtracting natural numbers: 2 available calculators.
- 2. Rounding off numbers: 1 available calculator.

## 1. Adding and subtracting natural numbers, 2 available calculators:

## 2. Rounding off numbers, 1 available calculator: