Showing posts with label Dividing Fractions. Show all posts
Showing posts with label Dividing Fractions. Show all posts

Scribe Post for November 24

Tuesday, November 24, 2009
Today in class we went through the home work that was assigned for the week end. I am going to do one of the questions that someone had trouble with.







The question is asking which method is better for you. So let us compare the two different methods Ming and Al have to offer us.




To do Ming's method all you do is multiply the fractions and simply to the lowest terms.


Al's Method is a little different. We are canceling the numbers as you can see. Canceling numbers saves you the trouble of simplifying the fraction later.

I personally prefer Al's method. The method makes things more easy to work with. Multiplying -1 by -1 is a lot easier and faster than multiplying -7 by -5 right? But it all depends on how you do your math and which one you are more comfortable with.

Before Mr.Backe told us to start our home work he showed us another way to divide fractions, compliments of Mr.Mark.


As you can see this method is a little different than the one we have been doing for awhile now, but it still gets you to the right answer.

Home work for today is to do Extend question number 25. Also you have to do the History Link on page 71 about Fractions and Ancient Egypt.

The next scribe is Linda.
Starting the scribe cycle from the beginning.

Scribe Post November 17,2009

Saturday, November 21, 2009
Hey class,sorry that this is late. I had a lot to do this week regarding volleyball and other stuff.This is what hat did on November 17.First of all we corrected homework that we did the day before. After we learned about the big word known as a RECIPROCAL.A reciprocal is two factors that when multiplied will give the product of one. Examples are...

5/11(11/5)=1

(2/3)(3/2)=1

(-4/5)(-5/4)=1


All of those are reciprocals.

Also we learned about the Identity of One.The Identity of One is any number divided/multiplied by 1 is itself.Examples are...

17/1=17

6.432/1=6.432


Then Mr.Backe gave us this question out of the blue...

1/2 / 3/4= 1/2 * 4/3
= 4/6
= 2/3


These are steps of dividing fractions..
1)Find the Reciprocal of the divisor
2)Multiply both fractions by the reciprocal of the divisor
3)The divisor becomes 1.Anything divided by 1 is itself.
4)Simplify if possible.


Thank you for reading my very late scribe post and again sorry for it being late. Well enjoy and leave many comments Please.