Friday, January 14, 2011

Final Percent Post

Percent means out of a hundred. It's another name for hundredths. They can be represented as a fraction or a decimal.
This chapter, we did percents. We have learned a lot from, showing percents on a hundred grid(s), converting them into decimals and fractions, combining percents and a percent of a number.

We first learned about representing percents. You can have percents from less than 0 to more than 100 on a grid . The percents involve fractions as well.
An example of a number on a hundred grid, containing more than 100 is:

An example of a number on a hundred grid, containing less than 100 is:


The next thing we learned about fractions were converting them into fractions and decimals.
Example: convert the following into a decimal and percents .
a) 3/40 = 0.075
the numerator divided by the denominator and you get the decimal .
b) 0.075 x 100 = 7.5


4.3 was finding a percent of a number. I like to use the ratio grid to find the percent .
example: whatever you do one side, you do to the other side.


The last thing we learned about percents were combining them . I thought this was really easy.



Final Percent Post

What is a percent? A percent is out of a hundred. It is also another way of saying hundredths.

We recently learned about percents and did many things with them. We learned how to represent them in different ways, change them into fractions, decimals, and percents, how to find a percent of a number and how to combine percents.

Representing Percents:
You can use hundred grids to represent percents. You can also use more than one grid and shade part of a square.
Example: If you had to represent 180%, you would shade in one whole one hundred grid and 80 squares of another.

Fractions, Decimals, Percents:
You can use fractions and decimals to represent percents.
Example: 1/2 = 0.5 or 50%.

Percent of a Number:
To find the percent of a number, you can use some simple mental math strategies such as halving, doubling and dividing. You can also take the number and change it to a decimal then multiply that by the other number given.
Example: If you were finding 160% of $53.27...
1.60 x 53.27 = $85. 23

Combining Percents:
Percents can be combined by adding to help you solve problems. You can also use other strategies such as multiplying.
Example:
Ravi purchased 3 DVDs for $19.99 each.
Find the total cost for the DVDs including
5% GST and 6% PST.

$19.99 x 3 = $59.97
$59.97 x 1.11 = $66.5667
= $ 66.57

Here is my math video answering the four questions Mr. Harbeck gave us.



This is my percent post.
Here is a video that I hope will help you further understand percents.

Thursday, January 13, 2011

Tyler's Percent Scribe Post

4.Use mental math to do the following.

a)20% of 60= 12

b)250% of 400= 1000

c)10 1/2 % of 100=10.5

8.The original price of a jacket was $84.00. A store manager marked the price down by 25 1/2 %. By how much was it reduced?

84 x 0.255 = $21.42

11. Josephine haad an average of 40% after her first game, the second game she had ten shots and finished with an average of 50%. How many baskes did she make out of ten.
She made 8 shots out of ten.

Final Percent Post

What is a Percent?
Percent is a number out of 100.
For example 50% is 50 out of 100.

Percent can be turned into a decimal and to a fraction.
For example 50% in decimal will be 0.5 and in fraction it's going to be 1/2.

If your turning a percent to a decimal, divide the percent by 100 and you'll get your answer

If your turning a percent to a fraction first find the decimal of the percent, second count how many digits you have after the decimal point then put zero's every digit you have after the decimal.
E.G 45%=0.45=45/100

Percents can be represent also by shading square from a hundred grid. To represent 100% in to a hundred grid color all of the squares. To represent a percent that is less than 1% shade part of one square then draw another square and divide that square whatever is the denominator given to you.

Percent have a strategies like halving, doubling, and dividing by ten if you are to ask use mental math.

Here is my video for the percent questions


Final Percent Post

What is a percent?

Percent is a number out of 100.
For example 75% is 75 out of 100.
Percents can be expressed by using decimals and fractions.
For example 75% is also 0.75 and 75/100.


Key Points for this Chapter

4.1 Representing Percents

To represent a percent you can shade squares on a grid out of 100 squares called a hundred grid

To represent a percent greater than 100% shade more than one grid

To represent a fractional percent between 0% and 1% shade part of one square

4.2 Fractions, Decimals and Percents

Fractions, decimals and percents can be used to represent numbers in various situations

Percents can be written as fractions and decimals

4.3 Percent of a Number

You can use mental math strategies like halving, doubling and dividing by 10 to find the percents of some numbers

To calculate the percent of a number, write the percent as a decimal and then multiply by the number

4.4 Combining Percents

Percents can be combined by adding to solve problems

To calculate the increase in a number: Add the combined percent amount to the original number, or multiply the original number by a single percent greater than 100


Here is my video explaining percents





Here's a video using a percent question to show how to find a percent of a number



And finally this is the link to my percent scribe post.

Hope you liked my video and post.

Final Percent Post

What is Percent?
A percent is a number out of 100.
ex. 35% is like 35 out of a hundred.

There is another way you can use percent by sing decimal and percent.
ex. 35 i like 0.35 and 35 out of a hundred.

Key Points of this Chapter..

4.1 Represent Percent
To represent a percent, you have to shade squares on a 100 grid, that is called a hundred grid. When you shade in the whole grid that is 100%. To represent greater than 100% shade more than one grid and then. To represent a fractional percent, you have to shade in between 0% and 1%.

4.2 Fractions, Decimal and Percents
When using fractions, decimals and fractions you can use them for representing numbers. You can use percents as a decimal and a fraction.

4.3 Percent of a Number
If you want to find the percent of a number, you have to put the percent as a decimal then you multiply by the number. There are different kind of ways to do this, one way is to divide by 10.

4.4 Combining Percents
When you add the percents together, you can find some problems. To calculate the increase in a number, you can combine percents amount.


Here is my video, talking about percents. http://www.youtube.com/user/spmath789#p/a/u/1/Z1nVmtZbDxA
Hope you like it (:









Final Percent Post

A percent means out of 100 and it also another name for hundreths
Ex. 57% means 57/100, 57 out of 100, or 0.57


4.1 Representing Percents
Representing percents means showing a percent as a picture in a hundred grid
Ex. 53% on a hundred grid, 53 squares of the grid would be shaded so its 53%


4.2 Fractions, Decimals, and Percents.
- Fractions, Decimals, and Percents can be used to represent numbers in various situations
- Percents can be written as a fraction and as decimal
Ex. 1/2% = 50%, 0.5% = 0.5/1000 = 0.005, 150% = 150/100 = 1.5, 42 3/4 = 42.75% = 42.75/100 = 0.4275


4.3 Percent of a number
- You can use mental math strategies such as halving, doubling, and dividing by ten to find the percent of same numbers
- To calculate the percent of a number, write the percent as a decimal then multiply by the numbers
Ex. 12 1/2% of 50, 0.125 x 50 = 6.25 (12 1/2% = 12.5% = 0.125)


4.4 Combining Percents
- Percent can be combined by adding to solve problems ; 5% + 7% = 12%
To calculate the increase in a number you can add the combined percent amount to the original number.

Ex. 12% of 100 = 0.12 x 100 = 12, 100 + 12 = 112
- You can multiply the original number by a single percent greater than 100
Ex. 112% of 100 = 1.12 x 100 = 112
- Percents of percents can be used to determine amounts that result from consecutive percent increases or decrease


Understanding Percents

My video.


Click here to learn about precents more.
Here is my precent scribe.