Showing posts with label Melissa's Growing Post. Show all posts
Showing posts with label Melissa's Growing Post. Show all posts

Saturday, December 16, 2006

Melissa's Growing post

Okie...Here's my growing post
Question 1: What is a good definition of percent? You should use words symbols, pictures and numerical examples in your definition.

-A percent, to me, is the overall number out of 100. It is expressed as this symbol:%. It supposedly came from the term "cent" which means "100" in French. And since a percentage meant something out of 100, we call it "per" "cent". Some percentages are: 50% (1/2 or half), 25% (1/4 or quarter), and 10% (1/10)...or dime...Haha I'm just kidding.

Here is
my percentage web. I included most of what I've already said above, and used gliffy. I'm not a total expert at using it yet so it's not perfect. Hopefully it's understandable.













Question
2:How are three fifths (3/5), 3:2, 60% and 0.6 all the same? Use pictures and words to show your answer.

-These all equal the same thing. The only difference is tha
t they're written in different equivalents. Don't get confused. Let me explain...

-
This column shows the different equivalents.

-These are the equivalents for 3/5.

-These are the equivalents for 3:2.


-These are the equivalents for 60%.

-These are the equivalents for 0.60.




No matter how different you write them, they'll always equal the same thing.


Question 3:
Show 3 different ways to find 35% of 80.

-Okay, here's my grid that shows 35% percent out of 80.

1. The first way I came up with is to figure out 1%. It's probably the easiest way for finding the answer, and it's always correct. 80/100 (/=divide. I don't think the computer has a dividing sign) =0.8.
0.8x35=28. 28=35% of 80.


2. Here's the second way. 80/10=8

8/2=4(5%)
8x3=24+5%(4)=28


3. Here's my third way. 80/10=8
8/2=4(5%)
4x7=28

Question 4:
Find a link to blogs that deal with percentages. Leave a comment behind and add the link with a review


-Okay. here are some the one I've found...

-http://linden8am.blogspot.com/ - this class is learning how to convert decimals, fractions, and percentages. I left a comment for one of the students saying that their scribe was very well done and that it was easy to read and was understandable because of the diagrams.


Question 5: The principal announced that 50% of the chi
ldren in Ms. Stanzi's class met their reading goal for the month and that 55% of the children in Ms Lowrey's class met their reading goal for the month. Ms Stanzi said that a greater number of her students met their reading goal. Could Ms Stanzi be correct? Why or Why not.

-I think that Ms. Stanzi isn't correct; unl
ess she has more students. See, if Ms. Stanzi claims to have the greater amount of accomplishment, that must mean that she has more students.



















Question 6:
Use a hundred grid (unit square) to illustrate the following questions. Once you have explained and illustrated what the question means solve it.

a) 16 is 40% of what number?



To find out what the number is, I divided 40% by 40%. 16/40=0.4.
The next thing I did was multiply 1% (0.4) by 100. 0.4x100=40.

40/100=16/40

If you divide 40 by 100, and 16 by 40, you should get the same answer. If you do, then you know that you did this correctly. 40/100=0.4 16/40=0.4




b) What is 120% of 30?

For this question, you could instantly tell that the answer is going to be over 100%.


To find the answer, first you'll have to know that the fraction of this question is 120/100. Knowing that, you'll have to find out the extra 20%.
This is what I did: 30=100%
To find 20%, 30/10=3x2=6
6=20%
The rest is pretty straight forward: 100%+20%=120%.
30+6=36.
36=120%.


I marked Boeun's scribe post: http://817math.blogspot.com/2006/12/boeuns-percentage-growing-post.html


Man...I thought I'd never have this done...XD