Scribe Post November 24

Friday, November 28, 2008
Hi, during class today we learned a lesson about multiplicative inverse. We also needed to add work in our barn doors on the division side in the positive & negative section(quadrant 4). To answer a division question with a positive then a negative integer, you must use multiplicative inverse.

hmmmm.....lets do 12 divided by -4. It seems impossible to do right? Well as a matter of fact it is possible. Try to do that question on your calculator. No, don't worry your calculator won't blow up! It works!

From what I understand, there are 4 easy steps to doing Multiplicative Inverse. First write the question using the division sign. Step 2 switch the answer(N) and the first integer and change the division sign to a multiplication sign. Step 3 Find the answer to N. Then fill in the question.

Your probably wondering what's wrong with just using partitive or quotative division. Well I'll tell you what's wrong: They don't work!

Quotative: How many -4's are in +12? It doesn't work because we can't make groups of -4 in a positive number.

Partitive: How many equal parts are in -4 groups when we have +12? It doesn't work either, because you can't draw -4 groups.

Let me think...........................................the next scribe is Maeddah!!!!!!!!!!!!!!!!!!!=P

Chapter 3: One Step equation solving


  1. peachy 8-41 said...

    WHY. WHAT.
    ._. You are mean. :) Just kidding. I know I asked you and everything. HAHAHAHAHA. THANK YOU. :D Dear Joseph short friend. AHAHAHAHAHA. I don't want to say the rest, it'll sound very inapporiate.

    November 29, 2008 at 5:01 PM  

  2. peachy 8-41 said...

    Oh, and and and.. Good job?! AHAHAHA. Nice PICTURES. Just looking at all the comments I put for Tiara's stuff and whatnot! :) THAT'S WHY IT'S SO PRO. IT'S ALL THANKS TO ME! Right? :P haha. Maybe you should have added more pictures, and stuff. But overall, good job. I like it :) And it shows a really good explaination on Multipicative Inverse. Good job BEST FRIEND.

    November 29, 2008 at 5:03 PM  

  3. Karen 8-17 said...

    GOOD JOB! ( I'm invading 8-41 so you prolly don't know me, but it's okay(;)
    I didn't catch any errors--> KOODOS for that;). I like your use of color and how you explained what you did on your example, which is WOW-mazing. I can see the you also explained why we can't use quotative and partative.

    November 30, 2008 at 4:02 PM  

  4. linda 8-17 said...

    HELLO! This Duck invaded 816, and 873, and now she's invading 841!
    Well anyways, you had a very good scribe! I just noticed one mistake... you spelled "you're" wrong. You put "Your" in one sentence, almost to the bottom. So, other than that you had an excellent scribe. Your use of colour was good, and used accordingly to emphasize the importance of said word.
    I especially liked your picture, because you explained the operation in words, and visually as well. So... WELL DONE, OLD CHAP!

    -Urban Duckie ... the invader

    November 30, 2008 at 4:02 PM  

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