Sunday, January 13, 2008

Karen's Scribe

Last Friday in class we did a test about adding and subtracting fractions.
I will be explaining two questions from the test. The following questions will be #'s 3&4.
Question #3

To find the answer I used $ strategy. First I ignored the 5 from 5 9/10 then I have to figure out the answer for 9/10 using 100, so then it would be 100÷10(denominator)=10 multiply by 9(numerator) equals 9o it would be 90/100. Next is 3 4/5 again I ignored 3 so then for now we have 4/5, 100 divided by 5 is 20 multiply by 4 is equals 80/100.

Now we have 10/100, we still have 5 and 3 that we ignored previously. I just did 5-3 = 2 then included 2 to the answer




Question #4

Using the $ money strategy. I did kind of the same thing for the question #3 that I just answered previously. I also ignored the whole for each fraction so then for now I have 2/5 and 13/20

But since you can't subtract 40/100 to 65/100. Now I have to take the whole from 5 9/10 to subtract it to 1 ( 5-1) = 4 then I add 40 + 100 since we have 40/100 I added them together so it became 140/100for 3 65/100 I just leave it the same way then now we have 4 140/100 subtract by 3 65/100 = 1 75/100 although we can still simplify it.

I simplified 75/100 divided by 5 = 15/20 then again divided by 5 = 3/4 then that's where I added 1 to get 1 3/4


5 comments:

Jann 8-73 said...

Good Job on your Scribe Karen, i liked how you explained your answers and showed it with a picture, but i think some of your pictures did not come out.

Michael Jordan 873 said...

good job on your scribes, i like the how you solve the question and the explanation is written very well.

Jullian 8-73 said...

good job on how you solved the questions and the explanations are very easy to understand

naaadine s. 873 said...

nice scribe! the answers are very easy to understand.

annedenisse 873 said...

Wow! If i didn't know how to subtract fractions, your scribe is where i would go to for help! Your very thorough when you explain (h5)