Oh, Dearest Mother, Sweetest Virgin of Altagracia, our Patroness. You are our Advocate and to you we recommend our needs. You are our Teacher and like disciples we come to learn from the example of your holy life. You are our Mother, and like children, we come to offer you all of the love of our hearts. Receive, dearest Mother, our offerings and listen attentively to our supplications. Amen.



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Living and Loving Numbers
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Bridget
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Posted: Feb 02 2007 at 9:25am | IP Logged Quote Bridget
I don't know how to figure percentages. I just estimate or use a calculator.

An online search only turns up calculators or examples using 50% of 100. Not very helpful for real percentage problems.

Can anyone point me to a simple step by step instruction on how to figure out percentages for upper el students?

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Denise in IL
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Posted: Feb 02 2007 at 10:07am | IP Logged Quote Denise in IL
I have written a couple of articles on percents for my blog. You might find them helpful.

Percents: Key concepts and connections
http://letsplaymath.wordpress.com/2007/01/16/percents-key-co ncepts-and-connections/

Percents: The search for 100%
http://letsplaymath.wordpress.com/2007/01/27/percents-the-se arch-for-100/

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Denise
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Bridget
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Posted: Feb 02 2007 at 11:56am | IP Logged Quote Bridget
Thank you, Denise. Boy, you have a lot of stuff there!

I asked my dh, a MATH MINOR!, to help me explain it for the children but he might as well have spoken in HTML code. I can't convince him I need the explanation for dummies. He is just too far above me and the children.

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Leonie
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Posted: Feb 03 2007 at 5:18pm | IP Logged Quote Leonie
Nice blog, Denise - and great explanation!

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Denise in IL
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Posted: Feb 05 2007 at 7:07am | IP Logged Quote Denise in IL
Bridget wrote:
I asked my dh, a MATH MINOR!, to help me explain it for the children but he might as well have spoken in HTML code. I can't convince him I need the explanation for dummies. He is just too far above me and the children.


When my dh was studying civil engineering in college, he had one professor who told the students they didn't really know anything until they could explain it to 2nd graders. That led to some interesting essay assignments--especially for students who were used to simply cranking through equations!

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Denise
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mom3aut1not
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Posted: Feb 05 2007 at 6:29pm | IP Logged Quote mom3aut1not
Bridget,

You could always look at Key to Percents.....

Percents are just hundreths.... 50 % is just 50/100, 1% is 1/100, and so on. So a 15 % tip is 15/100 or 3/20 of the bill.

Remember, 27% = 27/100 = .27 and so on.

So, to figure, say, 20% of $199.95 (Let's say there's a 20% off sale or something), change the 20% to its decimal form (.2) and find what 1/5 or .2 of $199.95 by multiplying.

.2x$199.95 = $39.99, so the item is $39.99 less than usual and would cost $159.96 plus tax.

So,

n% = n/100.

n% has also a decimal representation.

Finding n% of a number is the same as finding n/100 of that number. Usually we use the decimal representation in daily life, but we use whatever version of the number is the easiest in a situation.

Common percents

1% =1/100 =.01
5% = 1/20=.05
10% = 1/10 =.1
20% = 1/5= .2
25%= 1/4 = .25
33 1/3% = 1/3 =.3333333....
50% = 1/2 = .5
66 2/3% = 2/3 = .6666666.....
75% = 3/4 = .75
100% =1
200% = 2
and so on

Too bad Square 1TV isn't around anymore. They really emphasized the relationships between fractions, decimals, and percents. My older kids also loved the show. How I wish I it was available on dvd -- or even video!

Does that help?

In Christ,
Deborah

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Denise in IL
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Posted: Feb 06 2007 at 10:35am | IP Logged Quote Denise in IL
Square One---Oh, I miss that show, too. It was so much fun!

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Denise
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