Amy's Percentage Growing Post

Question 1
What is a good definition of percent? You should use words symbols, pictures, and numerical examples in you definition.
A percentage is part of a whole. It can be converted into a fraction, decimal, and a ratio. A percentage is an equivalent fraction out of 100. The % sign also means that there is a number out of 100.

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.



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

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Question 4
Find a link to blogs that deal with percentages. Leave a comment behind and add the link with a review (What the post was talking about.... yes you have to read the post and why others should read the post) Hint In the side bar there are links to other schools. Three of them have done work on percentages!


I commented on this blog: http://linden8m.blogspot.com/ but my comment has not yet been accepted to be visible. This post explains to us on how to convert things like fraction to percent, percent to decimal, decimal to percent and etc. It is a good place to look at if you are still struggling on converting fractions, percents, and decimals.


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 could be correct. She could be correct because she might have more kids than Ms. Lowrey. If Ms. Stanzi had 40 kids in her class and Ms. Lowrey had 25 kids in her class, Ms. Stanzi would have 20 children that have met their reading goal of the month because 40 divided by 2 equals 20 or 50%. Ms. Lowrey would have 14 or 15 children that had met their reading goal because 39 divided by 100 is 0.39 and multiply is by 100 would give you 13.75. Ms. Stanzi can be correct.


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?


The number of squares that are shaded in is 16. The squares are all worth 40%. Now to find how much the unit square is worth, we make the numbers into fractions. In this case the fraction will be 16/40. Now we divide the numerator by the denominator to make the decimal which is 0.4. Then we multiply the decimal by 100 and the unit square should be worth 40.




b) What is 120% of 30?

For this one, you add 20% to your total unit square because you already have a total of 100% which is 30 so you'll need to add another 20% to make the total of 120. Lets figure out 10% of 30 first. 30 divided by 10 is 3. So if you take 10% and multiply it by 2, you get 20%. In this case 10% = 3 so 3 x 2 is 6. 6 is 20%. So 100% = 30, 20% = 6. 30(100%) + 6(20%) = 36. 120% of 30 is 36.






I commented on C-J's and Jaymie's growing post. :)