Monday, December 18, 2006

Justin's Growing Post (final)

Question 1:

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

A respresentation that represents part of a whole or 100. It can also be more than 100%

example: 3/4 = 75%. I got this answer by dividing 3 by 4 or N by D multiplied by 100.

Question 2:

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

They are all the same because they are all equal to 3/5.Ratio: You keep the numerator for pt.1 and then subtract the denominator from the numerator to get 3:2Percent: You divide the numerator from the denominator and multiply it by 100.Decimal: You convert the decimal into a fraction and the simplify if you can

Question3:

Show 3 different to find 35% of 80.

1. 100/100=1 80/80=1
80/100= 0.8
0.8x35= 28

2. 100/100=1
35/35=1
35/100=0.35
0.35x80=28


3. 100/100=1
35/35=1
80/80=1
80/10=8
35/10=3.5

8 x 3.5= 28

Question 4:

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

http://www.stiffarmtrophy.com/2006/12/the_percentage_.html

This post talks about football players' status and how to convert them.

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: 40/2=20
Ms. Lowrey: 40/1.5=26.66

No, she can't be correct because there is more of an average of students that are meeting their reading goal and the only way Ms. Stanzi could be correct is if a bigger number of kids start improving their reading.

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?
b) What is 120% of 30?

a) 40% of 100 is 40
40/100=0.4
16 x 0.4=40
40/100 = 16/40

I got this answer by first dividing 40 by 100 and that gives me 0.4.So then you multiply the decimal by the part and that gives you 40% of 16.

b) 120% of 100 is 120
120/100=1.2
30 x 1.2=36
120/100 = 36/30

I got this answer by first finding out what 120% of 100 is which is 120. So then I divided 120 by 100 which gives me 1.2. Then you multiply by the whole which is 30 by 1.2, and that gives you 36 out of 30.

3 comments:

J-man said...

I give myself a 4/10 because I showed my work and used examples but i didn't have pictures to explain my answers.

One thing I need to improve on to get better is to use pictures to explain my answers better.

UnknowN J. said...

I give you a 6/10 because you handed it in on time and your information is okay. But you need some pictures to make the reader understand what you are saying. But anyways good job

M. Dela Cruz said...
This comment has been removed by the author.