### [1] Calculator 1: Rounding off Positive and Negative Numbers to Whole or Decimal Places, Online Calculator, Mathematical Explanations

### The latest 3 operations with rounded off numbers:

**Round off 2.35 to the nearest thousandth (3 decimal places)***Feb 25 15:17 UTC (GMT)***Round off 890,731 to the nearest hundred thousand (6 whole places)***Feb 25 15:17 UTC (GMT)***Round off 242.8 to the nearest hundredth (2 decimal places)***Feb 25 15:17 UTC (GMT)***All the operations with the numbers rounded off by users...**### [2] Calculator 2: Adding natural numbers calculator: calculate the sum and learn how to add multiple digit numbers

### The latest 3 operations with added numbers:

**93,966 + 3,354 + 420 + 133 = ?***Feb 25 15:16 UTC (GMT)***263 + 229 = ?***Feb 25 15:15 UTC (GMT)***31 + 54 = ?***Feb 25 15:15 UTC (GMT)***All the operations with the numbers added by users...**### [3] Calculator 3: Subtracting integer numbers calculator: calculate the difference and learn how to subtract multiple digit numbers

### The latest 3 operations with subtracted numbers:

**950 - 1,957 + 509 + 293 = ?***Feb 25 15:17 UTC (GMT)***- 881 + 380 = ?***Feb 25 15:17 UTC (GMT)***- 3,969 + 9,455 = ?***Feb 25 15:17 UTC (GMT)***All the operations with the numbers subtracted by users...**

### [1] How to Round Off Numbers to Whole or Decimal Places, Theory, Explanations, Examples. Special Cases

### [2] How to add natural numbers: calculate the sum and learn to add multiple digit numbers by using the column addition method

### [3] How to subtract numbers: calculate the difference and learn to subtract multiple digits numbers by using the column subtracting method