Monday, December 18, 2006

Krystina’s Growing Post !!

Question 1;

What is a good definition of percent? You should use words symbols pictures and numerical examples in your definition.


It is an equivalent fraction out of 100
The symbol for percent is this >>> %




















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.

They are all equivalents. Because 3:2 , you have to add the two numbers together which is 5 and that is the denominator and the first number of the ratio is the numerator which is 3. So in that case it would be 3/5.
So both are equivalent.

Now 0.6 is similar because … 3/5 equals 0.6.
So now those are similar.

Now 60% is similar to all of these because to find a percent is n/d = __ * 100 = %. So in this case it is similar because:
3/5 = 0.6 * 100 = 60%.




Question 3;

Show 3 different ways to fine 35% of 80.
There are 100 squares in each:

100 divided by it gives you 1%. So its 80 divided by 100 which equals 0.8
0.8 is how much one area of a square equals.


I kind of did mine in a different way.
(the ones in brackets mean multiply)

1:
35% (80) = ?
35/100 (80) =?
35(80)= 100?
35x80 = 2800
28 = 1 %

2:
another way is:
you have to first get this : How many tens are there in 80 ??
so its 8 right?
so on a grid you shade in 10% which is 8.
so that is 10 % already so now what you do is...
35 - 10 = 25
25-10 = 15
15 - 10 = 5

So all those ten equal 8% which equals 10% on a 100 grid square.
So now if all those 10s equal 8 then you add those with a 4

8+8+8+4 = 28 !!!!

3:
100/100=1 >> so now because the grid is out of 80 you do :

80/80=1 >> now you divide 80 by 100 and that equals :

80/100= 0.8 >> okaay now you get that decimal and multiply that by 35.

0.8x35= 28 >> which equals 28 =)


Question 4;

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

I left a comment on this person’s blog.
http://linden8z.blogspot.com/2006/12/review-of-percent.html


Question 5;

The principal announced that 50% of the children 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.

Ms. Stanzi can be correct because it did not say in the question how many students she has in her class. But that means that Ms. Lowreys class has more students because it says 55% and Ms. Stanzi has 50%.

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 ?



16 / 4 = 4

because the whole thing is out of 40 then the 4 equals 10 percent or 4 %

So there are 10 groups of 4 because 20 (shaded) and 60 (blank) added together is 100.
So there are 4 groups of ten. So all you have to do it:
10 x 4 = 40 >>> in this case the answer would be 40 !








b: what is 120% of 30 ?

30 / 10 = 3
2 x 3 = 6 >>> because there are 2 groups of three to = 6 so it is 20 %
100 = 30
20 = 6
now you add that all together
120 = 36 !

I didnt go on gliffy or bubbleshare because i tried and it didnt work. so i used paint

5 comments:

J-man said...

I'm going to give Tina a 10/10 beacause she explained her work with a lot of detail and was easy to understand. She also used good pictures to go along with it. I don't think anything needs to be improved.

Steph said...

I also think Tina deserves a 10/10 because i understood what she was trying to say and everything was in good detail and the pictures were also understanding.....GOOD JOB TINA

UnknowN J. said...

I will give Tina 10/10 because i can understand what she is talking about. The picture tells me more about a percentage. Good job Tina!

kimberLaay said...

I give krystina a 10/10 because she explained every good it was understandable. I really like the pictures o0o. GOOOD JOOB !

kimberLaay said...

everything ** haha