Math Blog 817 (2008)

Tanner`s Percent Post

noreply@blogger.com (Anonymous) — Tue, 02 Jun 2009 12:44:00 +0000

Mr. Harbeck asked us to make a post with questions off of a sheet we did in class. We had to do five questions, three from part A and any two from part B.

Part A

1. 245% of 356.8

356
___= 3.568
100
3.568x 245=874.16

2. 68.75% of 730
730
___=7.3
100

7.3
___=1.825
4
1.825x3=5.475
7.3x68=496.4
496.4+5.475=501.875

3. 360% of 129.95
129.95
_____=1.2995
100
1.2995x360=467.82

Part B

1.Table Salt is a chemical compound of sodium and chlorine. recommended daily intake is about 1700 mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating daily?

182% of 1700
1700
____=17
100
17x182=3094

One Canadian consumes 3094 mg. of sodium daily.

2.The 4900 seat hockey arenas was 63% full. How many people were at the game

4900
____=49
100
49x63=3087

3087 people were at the game

Jowella's Percent Post

noreply@blogger.com (Jowella 8-17) — Tue, 02 Jun 2009 02:47:00 +0000

For this post, I chose to answer 5 questions from the paper that Mr.Harbeck gave to us during math class. Here are the five questions that I chose to answer.

4.(c) 245% of $356.80?

(d) 68 3/4% of 730?

(e)60% of $129.95?

6. Table salt is a chemical compound of sodium and chlorine. Recommended daily intake is about 1 700mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating daily?

8. The Nile River is about 209% the length of the Yukon River. If the Yukon River is 3 168 km. How long is the Nile River(to the nearest km)? show your work.

The Nile River is 6 621.12 km long.

Nicky's Percent Post

noreply@blogger.com (Unknown) — Tue, 02 Jun 2009 00:39:00 +0000

Part A

Part B

Linda's Percent Post

noreply@blogger.com (Unknown) — Mon, 01 Jun 2009 02:59:00 +0000

Hello everyone! Mr. H assigned us all a post answering a few percent questions, and here is mine. Feel free to leave a comment!

The first question asks what is 245% of $356.80. To solve this particular question the easiest way to do so is to use a ratio chart, as shown in the image above. As mentioned previously, the question asks what is 245% of $356.80, meaning $356.80 is the whole, or 100%. That is the first thing you put is what 100% is, or the whole. Our goal is to find what 245% of $356.80 is, so the easiest way to attack this kind of question is to find what 1% is. So how do we get from 100% to 1%? We divide by 100! Remember, whatever we do to one side we must to do the other (of the ratio chart). 100% divided by 100 is 1, and 356.80 divided by 100 is 3.5680. Now that we know what 1% of $356.80 is we can easily find out what 245% is quickly, simply by multiplying 1 by 245. Quite obviously, 1 multiplied by 245 is 245, and 3.5680 multiplied by 245 is 874.16. Our answer is $874.16.

The question asks what 68 3/4 of 730 is. We're using a ratio chart to solve this question. We begin with what 100% is, and divide that by 100 on both sides to find what 1% is, which in this case, is 7.3. From there we multiply 1 by 68.75 because that is the percent of we are looking for. Our answer is 501.875.

The question asks what 360% of 129.95. We begin our ratio charts with what 100% is, which would be 129.95. To easily find what 360% is since we know what 100% is, we divide 100% by 1, (which finds us 1%) and multiply by 360, which would obviously give us 360%. Since we divided and multiplied said numbers on the Percents side, we must do so on the Value's side. 129.95 divided by 100 is 1.2995, and 1.2995 multiplied by 360 is 467.82. Our answer is $467.82.

The question asks for the commission of a house if the house is sold for $345 000. To do that we find what 6.75% of 345 000 is. We begin our ratio chart with what 100% is, which in this case is $345 000. We divide 100% on both sides by 100 to find 1 percent, which is 3450, and multiply that by 6.75, which is 23287.5%. Our answer is $23287.50. We do this because commission is what the salesmen gets off of what he/she sells. He/She gets a certain percentage (in this case 6.75) of the sales price (in this case $345 000) so that's why we solved for 6.75% of 345 000.

The question asks how much sodium is one person eating daily if people are eating 182% of 1700 mg of it. As always be begin by writing out what 100% is, which would be in this case 1700. We divide that by 100 on both sides to find 1%, which would be 17. Then we multiply that by 182 on each side to solve for our answer. Our answer is 3094 mg. We do this because 1700 mg is what is recommended about, and what people are usually taking in is 182% of this. Our goal was to find 182% of that because that's what people were taking in.

Percent Post

noreply@blogger.com (Unknown) — Sun, 31 May 2009 22:30:00 +0000

Part A

1) 245% of $356.80

The easiest way to solve this question is to use a ratio table. The question is what is 245% of $365.80? $365.80 is the whole or 100% and 245% what you are trying to find in the whole. Here is a picture of what it looks like to solve it with a ratio table.

The answer is $874.16.

2) 68 3/4% of 730

For this question you could also use the ratio table.

3) 360% of $129.95

I'm going to use a ratio table to solve this question.

Part B

Miguel bought a car for $4700. He made a down payment of 191/2%. How much was the down payment?

I think the easiest way to solve this question is to use a ratio table to help you solve it.

For this question you have to find 19 1/2% of $4700. To find that, the easiest is to find the value of 1%. To do that you have to divide it by 100; the answer would be 47. The next thing you do is multiply 19.50(same as 19 1/2) by 47. The answer you get is 916.50.

About 5.6% of Canadians have Type 2 Diabetes. If Canada's population is 32 million, about how many Canadians have this condition.

For this question you have to find out the amount of Canadians have Type 2 Diabetes. To do that you have to find 5.6% of 32 million. First you have to divide 100 by 100 which gives you 1 and then multiply 1 with 5.6. You also do that to 32 million, you divide it with 100. It gives you 32000 and then you multiply it with 5.6. The result is 179 000 and that is the answer.

noreply@blogger.com (Unknown) — Sun, 31 May 2009 21:29:00 +0000

Part A --
1) 245% of $356.80
356.80 / 10 = 35.68 (10%)
35.68 / 2 = 17.84

245% of $356.80 is $874.16
_____________________________________________

2) 68 3/4% of 730
730 / 100 = 7.3 (1%)
7.3 / 4 = 1.825 (1/4%)
1.825 x 3 = 5.475 (3/4%)

7.3 x 68 = 496.4 (68%)
496.4 + 5.475 = 501.875 (68 3/4%)

68 3/4% of 730 is 501.86 (rounded up to nearest hundredth)
__________________________________________________

3) 360% of $129.95
129.95 / 10 = 12.995 (10%)
12.995 x 36 = 467.82 (360%)

360% of $129.95 is $467.82
____________________________________________

Part B --

5) The 4900 seat hockey arenas was 63% full. How many people were at the game?

4900 / 10 = 490 (10%)
490 / 10 = 49 (1%)

2940 + 147 = 3087 (63%)

3087 people were at the hockey game.
_______________________________________________

3) Miguel bought a car for $4700. He made a down payment of 19 1/2%. How much was the down payment?
4700 / 100 = 47 (10%)
47 / 2 = 23.5 (1/2%)

893 + 23.5 = $916.50

Miguel's down payment was $916.50
______________________________________________

1) The commission for the sale of a house was 6 3/4%. If the house sold for $345 000, how much was the commission. Show your thinking.

My Thinking :
345,000 =100%; I have to find commission (6 3/4%)
345,000 / 100 = 3450 (1%)
3450 / 4 = 862.5 (1/4%)
862.5 x 3 = 2587.5 (3/4%)

20,700 + 2587.50 = 23,287.50

The commission was $23,287.50
________________________________________________

Percent Post

noreply@blogger.com (Unknown) — Sun, 31 May 2009 01:11:00 +0000

Part A
1) 245% of $356.80

245% of $356.80 is $874.16

2) 68 3/4% of 730

3 *divided by* 4 = 0.75
68 3/4% = 68.75%

68 3/4% of 730 is 501.875

3) 360% of $129.95

360% of $129.95 is $467.82

Part B
1) The commission for the sale of a house was 6 3/4%. If the house sold for $345 000, how much was the commission. Show your thinking.

3 *divided by* 4 = 0.75
6 3/4% = 6.75%

The commission was $23 287.50.

5) The 4900 seat hockey arenas was 63% full. How many people were at the game?

There were 3087 people at the game.

Hi everyone!

noreply@blogger.com (Janelle) — Wed, 27 May 2009 03:48:00 +0000

My name is Janelle, and I am also an Education student from the University of Regina. I am going into my third year in the Education program, and I am specializing in Pre-K to Grade Three right now. However, I'm not absolutely sure what grades I want to teach and I haven't had much to do with older grades, so I am very excited to check out what you guys are doing!

UofR Regina, Sk.

noreply@blogger.com (Tiffany (University of Regina)) — Mon, 25 May 2009 03:12:00 +0000

Hi everyone,
I am Tiffany, a fourth year university student at the University of Regina. I am studying to be a Math and Science teacher, so when I finish up at university in two years I will be looking for my own classroom to teach Math in. I am excited to check out your blogs and read about what you are learning and also to see how math makes it onto the internet with your help. To be honest, I have never heard of a math blog before, because when I was in Grade 8 there wasn't such a thing. But I think it is a great idea! Well, I think this tells a little bit about me and where I am at in my education. Looking forward to seeing your work! Cheers.

Richard's 2 minutes to make a difference

noreply@blogger.com (Unknown) — Mon, 25 May 2009 02:39:00 +0000

Our video presentation on Winnipeg Poverty. By : Richard Maquimot, Leomar Serapio,Robert Cruz, Francis Aguila. Please make a difference by donating. Hope you enjoy.

KKEA's Two Minutes to make a Difference

noreply@blogger.com (Unknown) — Thu, 21 May 2009 23:56:00 +0000

This is my 2 Minutes to make a Difference project. It talks about
poverty in The Philippines. Enjoy :)

2 Minutes To Make A Difference

noreply@blogger.com (Unknown) — Thu, 21 May 2009 03:28:00 +0000

The plight of the rainforest

The rainforests are disappearing. the rainy paradise were they have stood for thousands of years is steadily being chopped down, with the ground being raised to provide a living for men with no other choice. The governments who do it trapped in a downwards spiral of destruction.

Credits to Josh Fidelak and Tanner Goodwin, the makers of this film, and the countless number of sites and poeple who provided information, pictures and music (about 10)

noreply@blogger.com (Unknown) — Thu, 21 May 2009 00:35:00 +0000

This is a video that I made with Mark's help.

2 Minutes To Make a Difference Global Warming

This video is about global warming and how it is affecting the earth, and the animals that are still around today. It also includes how it affects us here in Winnipeg. Enjoy!

Bibliography

Pictures

Burining trees -http://www.spusa.org/mindfull/wp-content/uploads/2006/11/800px-deerfire.jpg

First polar bear picture -http://animalkingdom.files.wordpress.com/2006/12/polar-bear1.jpg
Second polar bear picture -http://img.metro.co.uk/i/pix/2007/02/polarbears_450x300.jpg

Arctic Ocean -http://www.lanl.gov/news/1663/images/polar/1lg.jpg

Stop sign -http://firefighterclosecalls.com/images/600px-Stop_sign.gif

Red River -http://gsc.nrcan.gc.ca/floods/redriver/images/view1.jpg

Alpine glaciers -http://www.calstatela.edu/dept/geology/Glaciers/Jungfrau(2).jpg

Bike -http://uwadmnweb.uwyo.edu/oap/images/atlas%20bike.gif

Car -http://www.chevroncarsblog.com/images/photos/yellow-car_lg.jpg

Recycling bin -http://www.glynncounty.org/images/pages/N707/recycling%20bin.jpg

Packaged products -http://www.glynncounty.org/images/pages/N707/recycling%20bin.jpg

Music

"Be Ok" by Ingrid Michealson-I got this song off Lime Wire.

"

2 Minutes To Make A Difference

noreply@blogger.com (Unknown) — Wed, 20 May 2009 23:39:00 +0000

In this video we will watch an educational video on the stuff about 1 million acts of green. It will give you some ideas on what to do and not to do. Please do the good side not the dark side

Credits to The following student who made this possible.. Room 73 Aaron Justin and a big hand to Darren. Especially Darren to make this vid possible

Watch it in high definition people( HD)

Vietboyz's 2 Minutes to Make a Difference

noreply@blogger.com (Unknown) — Wed, 20 May 2009 22:23:00 +0000

2 Minutes to Make a Difference

In our video, we show how be obese can have its downfalls. We show how you can prevent obesity and live a healthy, strong, and happy life. We also show which ways of preventing obesity is good and bad. And finally we explain how you can help people or help yourself win the battle over obesity.

The Ninja's 2 Minutes To Make A Difference

noreply@blogger.com (Unknown) — Wed, 20 May 2009 22:00:00 +0000

Our video is about saving energy and what wasting energy does to our planet. Linda, Nikki, Camille and I's video is set as a court show that suddenly gets interrupted by a news cast.

Websites:
http://wikipedia.org/
http://www.re-energy.ca/t-i_renewablebasics.shtml
http://www.eia.doe.gov/kids/energyfacts/sources/renewable/geothermal.html

2 Minutes to Make a Difference Mark and Jai

noreply@blogger.com (Unknown) — Wed, 20 May 2009 21:43:00 +0000

In this video it will show you what global warming is, and what damages it is doing to the earth. You will learn about what can cause it and what effects it has. Enjoy!

Josh, Jp, Patrick and Nicko 2minutes make a difference

noreply@blogger.com (SupahJoshiee) — Wed, 20 May 2009 13:37:00 +0000

Blood Diamonds
In the video we will be talking about, whats the story behind the diamonds
we're wearing. And we will also be talking about some people are able to smuggle them into different country's just to sell them.

Ninja's for the wind!

noreply@blogger.com (Unknown) — Wed, 20 May 2009 13:10:00 +0000

This video is brought to you by a Ninja's production:)

My video:

This video explains the effects and the solutions to the problems we face from wasting energy!
We explain that even through people might not see how it effects the earth that they NEED to realize it is harming, not only the earth, but us humans on the earth, and also poor innocent animals. And at the end of all of this we really wanted to have a question that would leave the audience thinking! So have you thought about the question? Maybe you forgot it? well here it is one more time: One person can make a difference... the question is......... WILL YOU?

VietBoyz' 2 Minutes to Make a Difference

noreply@blogger.com (Unknown) — Wed, 20 May 2009 03:53:00 +0000

2 Minutes to Make a Difference

Our video explained how obesity is problem in our world, and we try to convince the viewers to give support for these people in either big or small ways. We've also explain the good and bad ways to eating healthy. We have also explained what can happen if the obese are unable to help themselves, and what can happen if there is nobody to help.

The Ninja's 2 Minutes To Make A Difference

noreply@blogger.com (Unknown) — Wed, 20 May 2009 02:49:00 +0000

In our video we decided to create a court/news cast theme. The video begins off in a court show with Human Race and Mother Nature, arguing over what the Human Race has done to Mother Nature's planet then the show is interrupted by breaking news about saving energy.
Below is The Ninja's 2 Minute To Make A Difference video.

References
http://en.wikipedia.org/wiki/Efficient_energy_use
http://www.saskenergy.com/saving_energy/tips.asp
http://www.saskenergy.com/saving_energy/tips.asp
http://en.wikipedia.org/wiki/Renewable_energy
http://en.wikipedia.org/wiki/Fossil_fuel

J.E.E.U.'s 2 Minutes To Make a Difference

noreply@blogger.com (MY BLOG AND ME) — Wed, 20 May 2009 02:07:00 +0000

This is our video about poverty, what it is, how it affects people and how to stop it and making a difference in the world. Our video gives information about poverty and a little bit more about making a difference in the world as an individual or as a group. I hope you enjoy it!

Vietboyz 2 Minutes to Make a Difference

noreply@blogger.com (Unknown) — Tue, 19 May 2009 01:31:00 +0000

This is a 2 minutes to make a difference and it took a long time to make it. Also we just started the video about a week before the deadline. The video is about Childhood-Obesity. It explains how you can stop it and how much of the population in our world is obese. Also it tells you whats the cause of being obese.

Rinorm Austin's Fraction Post

noreply@blogger.com (Austin 9-05) — Tue, 12 May 2009 22:20:00 +0000

Adding Fractions

When you add fractions you need to find the lowest common denominator. The easiest way to do that is to multiply the two denominators.

2/3 + 1/8= 16/24 + 3/24= 19/24

1/4 + 3/5= 5/20 + 12/20= 17/24

1 3/4 + 2 1/5= 3

You add the 2 whole numbers first.

3/4 + 1/5= 15/20 + 4/20= 19/20

After you add the two fractions you get the answer.

3 9/20

Subtracting Fractions

When you subtract fractions you need to find the lowest common denominator. The easiest way to do that is to multiply the two denominators.

13/15 - 4/5= 13/15 - 12/15= 1/15

4/5 - 1/2= 8/10 - 5/10= 3/10

2 2/3 - 1 1/3=1

You subtract the 2 whole numbers first.

2/3 - 1/3= 1/3

After you subtract the two fractions you get the answer.

Multiplying Fractions

When you multiply fractions, you multiply both the denominators and numerators. If theres a mixed fraction, you turn it into a improper fraction and work from there.

3/4 x 1/2 x 6/7= 18/56= 9/28

As you can see I have simplified the answer to the lowest terms possible.

6/7 x 2/3= 12/21= 4/7

4 1/2 x 1/3= 9/2 x 1/3= 9/6= 1 3/6= 1 1/2

Dividing Fractions

When you divide fractions you use a recipical.

I dont know how to do it on this mac because i dont have paint so look at the other students work :)

Erika's last fraction post

noreply@blogger.com (Unknown) — Tue, 12 May 2009 05:06:00 +0000