CJ's Percentage Growing Post

Question 1:
What is a good definition of percent? You should use words symbols, pictures and numerical examples in your definition. (suggestion gliffy is an excellent tool for adding detail to your definition.)




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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.

3/5, 3:2, 0.6, and 60% are all the same because if you try to convert 3/5, (for example), to a decimal, you'd get 0.6; and 0.6 converted into a percent = 60%; and 3/5 expressed as a ratio is 3:2.


3/5 is equal to:
3:2 because the numerator, (3), is the first part in the ratio, and the denominator minus the numerator, (5-3), is 2, so 3/5 expressed as ratio is 3:2.

• 0.6 because to convert a fraction into a decimal, you must divide the numerator by the denominator , and 3 divided 5 is 0.6.

3/5 = 0.6

• 60% because in order to convert a fraction into a percent, you have to convert the fraction into a decimal, (by dividing the numerator by the denominator), and then, to get a percent, you have to multiply that answer by 100.

3 divided by 5 = 0.6
0.6 x 100 = 60
3/5 = 60%


THEY ARE ALL EQUIVALENTS !



Question 3:
Show 3 different ways to find 35% of 80. (bubbleshare is an excellent tool to animate the many different ways of finding these answer).




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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!

http://linden8z.blogspot.com/

This post was talking about percentages; what they are and how to reduce them. I think this is a good post because this person explains how to get a percent really clearly. They also give examples which is good because then students like me will have an idea of how to get a percent, or how to reduce a percent.


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 cannot be correct because the amount of children in Ms. Lowrey's class, that met their reading goal, is greater than the amount of children in Ms. Stanzi's class that met their reading goal.

Ms. Stanzi's #: 50% = 1/2
Ms. Lowrey's #: 55% = greater than 1/2




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 16 is 40% of an unknown number.







b) What is 120% of 30?

To find 120% of 30, you have to divide 30 by 100, to get 1% of 30. Once you get 1% of 30, (which is 0.3), you have to multiply 1%, (0.3), by 120%.


So, 120% of 30 is 36.



OR..