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anonymous

  • 5 years ago

how do you do fractions?

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  1. Oaktree
    • 5 years ago
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    Meaning...

  2. anonymous
    • 5 years ago
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    hey i am in 7th grade....and i never understood the simple steps!!

  3. Oaktree
    • 5 years ago
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    Wow...do you mean adding or subtracting or multiplying or dividing them?

  4. anonymous
    • 5 years ago
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    all

  5. Oaktree
    • 5 years ago
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    O.K.

  6. Oaktree
    • 5 years ago
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    To add, you need to make common denominators (the bottom part) for both fractions

  7. Oaktree
    • 5 years ago
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    You following?

  8. anonymous
    • 5 years ago
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    no .i am not stupid though.. can you show me a problem?

  9. Oaktree
    • 5 years ago
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    So, for 1/2 + 3/4, you need to get both to have a bottom of 4. That's a number that both 2 and 4 go into.

  10. Oaktree
    • 5 years ago
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    So you'd multiply 1/2 by 2/2, because to multiply fractions you just multiply the tops and bottoms, getting 2/4

  11. Oaktree
    • 5 years ago
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    And if you know simplifying fractions you know that 1/2 is the same as 2/4, so this always works

  12. Oaktree
    • 5 years ago
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    But you always need to multiply by 2/2 or 5/5 or whatever, because otherwise you're not multiplying by 1 (2/2 or 5/5 are both just 1)

  13. Oaktree
    • 5 years ago
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    Good so far?

  14. anonymous
    • 5 years ago
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    yup..

  15. Oaktree
    • 5 years ago
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    So then, to add them you can just add the tops...BUT KEEP THE BOTTOM THE SAME.

  16. Oaktree
    • 5 years ago
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    So 1+2=3, so your answer is 3/4

  17. anonymous
    • 5 years ago
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    wow i am very stupid... well thanks

  18. Oaktree
    • 5 years ago
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    Then, for subtraction, it's the same thing, except you subtract the top numbers instead of adding them (duh!)

  19. Oaktree
    • 5 years ago
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    Good?

  20. anonymous
    • 5 years ago
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    yes

  21. Oaktree
    • 5 years ago
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    And then I showed you multiplication already (when you get common denominators)

  22. Oaktree
    • 5 years ago
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    So that leaves division.

  23. Oaktree
    • 5 years ago
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    You just reverse the second fraction and multiply them, so 1/2 divided by 3/4 would really just be 1/2 x 4/3

  24. Oaktree
    • 5 years ago
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    Which gives you 4/6, which you simplify into 2/3

  25. Oaktree
    • 5 years ago
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    You do know simplification of fractions, right?

  26. Oaktree
    • 5 years ago
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    Well, anyway, you just divide both the top and the bottom normally by a number they both go into.

  27. Oaktree
    • 5 years ago
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    Got all of that?

  28. Oaktree
    • 5 years ago
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    You there?

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