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  1. square.png
    by Dr. Osama M. Khaled — last modified Jun 15, 2025 12:57 AM Located in Mathematics / … / Find the perimeter of geometric shapes / Find the perimeter of the square
    square.png
  2. Find the perimeter of a triangle
    by Dr. Osama M. Khaled — published Jun 15, 2025 — last modified Jun 22, 2025 11:56 PM Located in Mathematics / … / Adding Whole Numbers / Find the perimeter of geometric shapes
  3. triangle.png
    by Dr. Osama M. Khaled — last modified Jun 15, 2025 01:08 AM Located in Mathematics / … / Find the perimeter of geometric shapes / Find the perimeter of a triangle
    triangle.png
  4. Subtracting Whole Numbers
    by Dr. Osama M. Khaled — published Oct 29, 2025 — last modified May 09, 2026 06:52 AM
    Subtraction of whole numbers is used by everyone. For example, to find the sale price of an item, a store clerk subtracts the discount from the regular price. ...
    Located in Mathematics / Basic Arithmetic / Whole Numbers
  5. Subtract whole numbers
    by Dr. Osama M. Khaled — published Oct 29, 2025 — last modified Oct 30, 2025 10:56 AM — filed under: Year 2
    To subtract two whole numbers, think of taking away objects from a set. For example, if we start with a set of 9 stars and take away a set of 4 stars, a set of ...
    Located in Mathematics / … / Whole Numbers / Subtracting Whole Numbers
  6. We can write a subtraction problem in
    by Dr. Osama M. Khaled — published Oct 29, 2025 Located in Mathematics / … / Subtracting Whole Numbers / Subtract whole numbers
  7. We read the following subtraction problem as
    by Dr. Osama M. Khaled — published Oct 29, 2025 — last modified Oct 29, 2025 06:25 PM Located in Mathematics / … / Subtracting Whole Numbers / Subtract whole numbers
  8. Given a subtraction horizontal and vertical forms, identify each part
    by Dr. Osama M. Khaled — published Oct 29, 2025 — last modified Oct 29, 2025 06:26 PM Located in Mathematics / … / Subtracting Whole Numbers / Subtract whole numbers
  9. Subtract:
    by Dr. Osama M. Khaled — published Oct 29, 2025 — last modified Oct 29, 2025 06:56 PM Located in Mathematics / … / Subtracting Whole Numbers / Subtract whole numbers
  10. Subtract 235 from 6,496
    by Dr. Osama M. Khaled — published Oct 29, 2025 — last modified Oct 30, 2025 07:06 AM Located in Mathematics / … / Subtracting Whole Numbers / Subtract whole numbers
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