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Math Help - Integers

  1. #1
    Newbie MarySW's Avatar
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    Integers

    This is going to be the first thing I study in school, I am not good at math but would love to have a better understanding of it. Is there anyone out there that can tell me how to do integers and give a detailed example to start me off with it?
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  2. #2
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    What do you mean by integers?

    What level are you studying?

    When I hear integers I think directed numbers. Do you have a number line?
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  3. #3
    Newbie MarySW's Avatar
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    RE: Integers

    Really I am not sure, I am just trying to prepare myself for some things. I know integers have to do with positive and negitive but I do not know anything else about it and what it is Just trying to get an idea, i am just going to be studying it at a college level.
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  4. #4
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    Sounds like you need a number line.

    Can you follow this?

    5-3 = 2

    therefore

    3-5 = -2

    but how?
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  5. #5
    Newbie MarySW's Avatar
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    Well I know how, I am not sure how to explain but ..
    you have 3 dollars and spend 5 leaving you with minus 2

    -5 -4 -3 -2 -1 0 1 2 3 4 5
    ^_______.^
    I understand that part of it, but what are integers used for? What kind of problems need to be solved using integers?
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  6. #6
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    Quote Originally Posted by MarySW View Post

    I understand that part of it, but what are integers used for? What kind of problems need to be solved using integers?


    applications like this...


    Quote Originally Posted by MarySW View Post
    you have 3 dollars and spend 5 leaving you with minus 2
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  7. #7
    Newbie MarySW's Avatar
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    Oh, what would be a more difficult question then?
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  8. #8
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    Quote Originally Posted by MarySW View Post
    Oh, what would be a more difficult question then?
    -2\times-6+7\times -3

    How would you do this one?
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  9. #9
    Newbie MarySW's Avatar
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    Seriously have no idea, I am so terrible. I do not know how I would go about to multiply integers : /
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  10. #10
    Newbie MarySW's Avatar
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    Is the answer 78? If not, could you break down how to do this. or is it -4 .. when I did it myself I got 78, when i calculated it I got -4 ... very different numbers here.
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  11. #11
    Newbie MarySW's Avatar
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    meh, i know I'm wrong with both numbers
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  12. #12
    Newbie MarySW's Avatar
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    I figured it out, is it -9? I put it in brackets and did (-2 x -6) = 12 then (7x -3) = -21 - 12+ -21 = -9
    I looked up all the formulas and what not positive plus positive and what not. Sorry for the multiple posts lol
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  13. #13
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    Correct.
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