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  1. Why do not you feel the force between you and the computer or mobile you are using now?
    by Dr. Osama M. Khaled — published Mar 22, 2024 Located in Physics / Gravity / The Law of Gravity
  2. Evaluate: 27 - 16 + 5
    by Dr. Osama M. Khaled — published Nov 04, 2025 — last modified Nov 04, 2025 08:17 PM Located in Mathematics / … / Subtracting Whole Numbers / Evaluate expressions involving addition and subtraction.
  3. Evaluate: 75 - 29 + 8
    by Dr. Osama M. Khaled — published Nov 04, 2025 — last modified Nov 04, 2025 08:17 PM Located in Mathematics / … / Subtracting Whole Numbers / Evaluate expressions involving addition and subtraction.
  4. Evaluate: 35 - 12 + 6
    by Dr. Osama M. Khaled — published Nov 04, 2025 — last modified Nov 04, 2025 08:17 PM Located in Mathematics / … / Subtracting Whole Numbers / Evaluate expressions involving addition and subtraction.
  5. Evaluate: 574 + 47 - 13
    by Dr. Osama M. Khaled — published Nov 04, 2025 — last modified Nov 04, 2025 08:17 PM Located in Mathematics / … / Subtracting Whole Numbers / Evaluate expressions involving addition and subtraction.
  6. Evaluate expressions involving addition and subtraction.
    by Dr. Osama M. Khaled — published Nov 04, 2025 — last modified Nov 04, 2025 08:22 PM — filed under: Year 4
    To evaluate (find the value of) expressions written in horizontal form that involve addition and subtraction, we perform the operations as they occur from left ...
    Located in Mathematics / … / Whole Numbers / Subtracting Whole Numbers
  7. Multiply exponential expressions
    by Dr. Osama M. Khaled — published Dec 17, 2023 — last modified Jul 12, 2024 10:19 PM — filed under: Year 9
    Multiply exponential expressions that have like bases
    Located in Mathematics / Algebra / Multiplication Rules for Exponents
  8. Multiply and simplify, if possible
    by Dr. Osama M. Khaled — published May 26, 2024 Located in Mathematics / … / Multiplying and Dividing Mixed Numbers / Multiply and divide mixed numbers
  9. You are just one step to join us ...
    by Dr. Osama M. Khaled — published Jul 05, 2024 — last modified Sep 13, 2025 06:09 AM
  10. Subtract the following
    by Dr. Osama M. Khaled — published Jun 23, 2024 — last modified Jun 23, 2024 11:29 AM Located in Mathematics / … / Adding and Subtracting Mixed Numbers / Subtract mixed numbers
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