### [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 12,576 to the nearest hundred (3 whole places)***Sep 21 12:13 UTC (GMT)***Round off 2.06666666966677 to the nearest ten (2 whole places)***Sep 21 12:13 UTC (GMT)***Round off 261.9 to the nearest one (1 whole place)***Sep 21 12:13 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:

**1,147 + 3,425 + 73,385 = ?***Sep 21 12:11 UTC (GMT)***375 + 515 + 670 = ?***Sep 21 12:10 UTC (GMT)***168 + 190 + 198 + 208 = ?***Sep 21 12:07 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:

**962 - 1,964 - 516 - 323 = ?***Sep 21 12:13 UTC (GMT)***- 816 - 289 - 276 = ?***Sep 21 12:13 UTC (GMT)***- 3,451 - 1,513 = ?***Sep 21 12:12 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