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  1. Khan Academy

  2. Rational number arithmetic | Khan Academy

  3. Khan Academy

  4. Negative number word problem: Alaska (video) | Khan Academy

  5. Rational numbers | Grade 7 (VA SOL) | Math | Khan Academy

  6. Standards Mapping - Texas Math | Khan Academy

  7. Intro to negative numbers: Quiz 2 - Khan Academy

  8. One-step equations with negative rational numbers

  9. Khan Academy

  10. Khan Academy