Rounding off Positive & Negative Numbers to Whole or Decimal Places, Adding & Subtracting Whole Numbers (Sum & Difference), Online Calculators

Three online calculators available: [1] Rounding off numbers [2] Adding numbers [3] Subtracting Numbers

These calculators are free and are listed below. Click on any link to access the calculator of your choice or to see the operations with number listed under each calculator's section.

• • [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 23.427193 to the nearest hundred (3 whole places)	Apr 27 23:14 UTC (GMT)
    Round off 233.11111111961171 to the nearest hundred (3 whole places)	Apr 27 23:14 UTC (GMT)
    Round off 8.765447685 to the nearest hundred billionth (11 decimal places)	Apr 27 23:14 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:

    637 + 906 + 636 = ?	Apr 27 23:14 UTC (GMT)
    975 + 2,094 + 324 + 297 + 546 + 166 + 132 + 844 + 116 + 6,540,111 = ?	Apr 27 23:14 UTC (GMT)
    121 + 115 + 146 + 133 + 158 + 139 + 112 + 134 + 154 = ?	Apr 27 23:13 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:

    - 2,875 - 1,976 = ?	Apr 27 23:14 UTC (GMT)
    100,031 - 139 = ?	Apr 27 23:14 UTC (GMT)
    - 427 + 366 + 485 + 301 - 904 = ?	Apr 27 23:14 UTC (GMT)
    All the operations with the numbers subtracted by users...

Online Articles How To / Steps and Explanations:

• • [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