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Adding Mixed Numbers - YourTeacher.com - Pre Algebra Help

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Uploaded by on Jan 24, 2008

For a complete lesson on adding mixed numbers, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to add mixed numbers by first adding the fractions, then adding the whole numbers. For example, to add 4 2/5 + 7 4/5, first add 2/5 + 4/5 to get 6/5, then add 4 + 7 to get 11. So 4 2/5 + 7 4/5 = 11 6/5. Notice, however, that the answer, 11 6/5, contains an improper fraction, 6/5, which is the same as 1 1/5, so 11 6/5 can be rewritten as 11 + 1 1/5, which simplifies to 12 1/5. So 4 2/5 + 7 4/5 = 12 1/5. Note that some of the problems in this lesson also require the student to find a common denominator for the fractions. For example, 5 1/4 + 6 3/8.

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  • You didn't explain how you changed the improper fraction to a mixed number.

    7/5 - 5 goes into 7 once so you put a 1 and it has 2 remainder so you put the 2 over the same denominator (which in the problem is 5) so your answer is 1 2/5.

  • i got it ;D

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  • am i the only one that is gonna comment on how strange her voice sounds. but for somereason itscalming

  • You did not explain right

  • how did you get the improper fraction to a mixed number?

  • You made it so fricken hard.

  • I wonder if anything excites her?

  • This isn't pre-algebra! This is what you learn in 2nd grade.

  • OMG, how do you add or subtract a fraction like 4/8 to a mixed 18 5/6? how come no one can show me this..

  • You're writing looks crap :P

    Get better handwriting

  • this helps alot

  • @kevsrapmusic i hate it to but i have to studdy if i wana pass the 6th grde

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