Today's scribe post

Tuesday, November 21, 2006.

In class today, we learned about Fractions, Decimals, Percentages and Ratios.

Fractions
Numerator/Denominator

How to turn a fraction to a decimal:
You take the numerator and divide it by the denominator.

For example: 4/5
4 divide by 5 = 0.80

How to turn a fraction to a percentage:
You take the numerator and divide it by the denominator and then you times it by 100 to get the percentage.

For example: 4/5
4 divide 5 = 0.80 * 100 =80%

How to turn a fraction to a ratio:
Part 1 : Part 2
Part 1 ---> Numerator
Part 2 ---> Denominator subtract Numerator

For example: 4/5
Part 1 ---> 4
Part 2 ---> 5-4 = 1
4:1

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Decimals
.

To turn a decimal to a fraction:
When you see a number with a decimal, you have to SAY the number... then you will write it out.

For example:
.67 is the number
you say it ---> 67 hundredths
the you write it ---> 67/100

To turn a decimal to a percentage:
You take the decimal and times it by 100.

For example:
.67 * 100 = 67%

To turn a decimal to a ratio:
The easiest way to turn the decimal to a ratio is to turn the decimal to a fraction first.
Then you will take the numerator of the fraction as part 1. Take the denominator and subtract the numerator from it and you will get the part 2 as your answer.

For example:
.67 ---> 67/100
100 - 67 = 33

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Percentage
%

To turn a percentage to a decimal:
You take the percentage and you divide it by 100.

For example:
23% divide by 100 = .23

To turn a percentage to a fraction:
You take the percentage as the numerator and if the percentage is less than 100, than you put the denominator as 100. If it's more than 100, than the denominator is 1000 etc.

Example 1:
23% is less than 100
23%/100

Example 2:
783% is more than 100
783%/1000

To turn a percentage to a ratio:
You take the percentage and subtract it by 100 (or by the value of the number).
Part 1 ---> percentage
Part 2 ---> 100 - percent

For example:
Part 1 ---> 23%
Part 2 ---> 100 - 23 = 77
23 : 77


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Ratios
Part 1 : Part 2

To turn a ratio to a fraction:
You take the part one of the ratio and you use it as the numerator. For the denominator, you will have to use part 1 AND part 2 for the denominator.

For example:
7 : 3
Part 1 ---> 7
Part 2 ---> 7 + 3 = 10
7/10

To turn a ratio to a decimal:
You will have to turn the ratio to a fraction first. Then you take the the numerator and divide it by the denominator.

For example:
7 : 3 ---> 7/10
7 divide by 10 = .70

To turn a ratio to a percentage:
First you will have to turn the ratio to a fraction. After that you will take the numerator and divide it by the denominator to get a decimal. Then you times the decimal by 100.

For example:
7 : 3 ---> 7/10
7 divide by 10 = .70
.70 * 100 = 70%


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These are some fun sites that might you might want to like at and check it out. These sites would help you to understand more about fractions, percentages, ratios and decimals alone, and converting them. Also, in one of the sites, there are some fun math games that you might like.

http://www.factmonster.com/ipka/A0881930.html
http://www.mathgoodies.com/lessons/vol4/meaning_percent.html
http://www.mathgoodies.com/cd/Objectives/objectives_vol4.html

Homework:

The stuff that we wrote from the white board should be copied down into your big, long sheet. Write all the stuff in boxes four and five and box 3 should be full of pictures.

EQUIVALENTS THE ASSIGNMENT

You should be able to find this assignment in our homeroom blogger and you should have finished this for homework. This is needed for your portfolio so make sure you finished it.

THINGS YOU NEED TO HAVE DONE:
1. Equivalent Chart
2. Big Paper
3. Quiz 1 and 2 (with corrections)
4. Equivalent Assignment #1
5. Equivalent Assignment #2 (number line)
6. Assignment #3
7. Pre-Test (with corretions)
9. Test (with corrections)

The next scribe person will be Jessica G. because she wanted to do it today. =)

K.V. 8-41

Changes I made:
-I added some of the things that are needed for the math portfolio
-I added some links for fun math websites about conversions
-Changed some of mistakes on scribe, like spelling, aligning...etc

Equivalents the Assignment

Equivalents The Assignment

1. Make 4 different fractions using the digits below. You may only use each digit once. Convert these 4 fractions into decimals, percents and ratios.

1, 2, 3, 4, 5, 6, 7, 8, 9

2. Make 4 different decimal using the digits below. You may only use each digit once. Convert these 4 decimals into fractions, percents and ratios. (Do not use the decimals from the question above).

1, 2, 3, 4, 5, 6, 7, 8, 9

3. Make 4 different percents using the digits below. You may only use each digit once. Convert these 4 percents into fractions, decimals and ratios. (Do not use the fractions and decimals from the questions above).

1, 2, 3, 4, 5, 6, 7, 8, 9

4. Make 4 different ratios using the digits below. You may only use each digit once. Convert these 4 ratios into fractions, decimals and percents. (Do not use the fractions and decimals or percents from the questions above).

1, 2, 3, 4, 5, 6, 7, 8, 9

Scribe of the day

Today in class we had a second quiz on equivalents. We also got into groups and made definitions for our big papers. Here are the definitions for the equivalents.

Fraction - A part of a whole number with two parts (denominator & numerator). The numeraor isthe part. Denominator is the whole.

Decimal - Numerical expressions that are part of a whole which is expressed as tenths, hundredths, thousandths, etc.

Percent - Represents as a part of a number generally out of 100.

The homework today is to make a definition for "Ratio".

Scribe Post -{November.16.2006}- [V 1.4]

So today we started off with a quiz. It was straightforward. It looked something like this....




We then had to finish the rest of the chart using what we have. Use this one for practice.

-------------------------------------------------------------------------------------------------------

After the quiz, we got to work on our new big sheet thingy for the "Equivalent" unit. We got started by brainstorming our defintions. We had to come up with some things that explain fractions, percents, decimals, and ratios.


Here's what i wrote down.....



FRACTIONS:


Fractions are a way of showing parts of a whole. Example, 3/4 shows that 3 parts out of 4 are shaded or different. There can be proper fractions, mixed fractions, or improper fractions. They are made up of a NUMERATOR ON TOP and DENOMINATOR ON BOTTOM. Numerator is the parts, and the denominator is how many parts you have in the whole. Proper fractions are like 4/5, mixed fractions are like 2 3/4, and improper fractions are like 10/3.


FRACTIONS-->DECIMALS
numerator {divide} denominator


FRACTIONS-->PERCENT
numerator {divide} denominator X 100


FRACTIONS-->RATIO
partI : partII
partI = numerator
partII = denominator - numerator


PRACTICE:
CONVERT ALL THESE FRACTIONS TO DECIMALS AND PERCENTS AND RATIO
1. 4/5
2. 7/13
3. 600/700



DECIMALS:


A decimal is a number that is not whole. Like 3.2 or 1.2. This means 3 wholes and 2 tenths of a whole, or 1 and 2 tenths of a whole. The parts of a decimal go from tenths, hundredths, thousandths, and so onth. Base 10 representative of values less than one.


FRACTIONS-->DECIMALS
numerator {divide} denominator

DECIMALS-->FRACTIONS
say it -->write it
0. 40 = 40 hundredths = 40/100 - 2/5



PRACTICE:
CONVERT ALL THESE FRACTIONS TO DECIMALS
1. 1/2
2. 6/13
3. 256/257

CONVERT ALL THESE DECMIALS TO FRACTIONS

1. 0.34
2. 0.56
3. 0.99


PERCENTS:


A percent is a part of 100. For example, 25% shows that 25 out of 100 is different. It consists of a number and a % sign. "Cent" means "100" in french.


FRACTIONS-->PERCENT:
numerator {divide} denominator

PERCENT-->DECIMAL:
percent / 100
46% = 0.46

PERCENT-->FRACTIONS:
% / 100
56% = 56/100

PERCENT-->RATIO:
% : 100 - %
partI = 100
partII = 100 - %
15% = 15 : 85


PRACTICE:
CONVERT ALL THESE FRACTIONS TO PERCENTS:
1. 3/4
2. 5/8
3. 678/1000

CONVERT ALL THESE PERCENTS TO DECIMALS AND FRACTIONS AND RATIO
1. 56%
2. 98%
3. 99%

RATIOS:

[EDIT://Nov. 17.06.]
I came up with some stuff for ratio. Kinda rough, and probably wrong. But here.

A ratio compares two quantities of something. It has 2 numbers and a colon in the middle. For instance, if you have 2 cokes, and 3 pepsis (or pepsus?) then the ratio of cokes to pepsis would be 2:3. You can include this in all your equvalent conversions by first converting to fractions:

RATIO-->FRACTION:
first number : second number.
first number + second number = DENOMINATOR.
first number = NUMERATOR.

FRACTION-->RATIO:
numerator = first number.
denonimator - numerator = second number.

PRACTICE:
CONVERT ALL THESE FRACTIONS INTO RATIOS
1. 4/5
2. 2/3
3. 7000/10000

CONVERT ALL THESE RATIOS INTO FRACTIONS
1. 5:3
2. 2:6
3. 1000:1

Another way of thinking of ratio is this:
Now you may have walked into a store and looked for a TV. You see 4:3 and 16:9 and all this crazy mumbo-jumbo. BUT. Wait. These are actually ratios. 4:3 means that the TV screen is 4/3 as wide as it is high.
(wikipedia)

Here's a website on ratios that i found while googling "sliced bread".

http://www.themathpage.com/ARITH/ratio-and-proportion_1-3.htm

There's a link to some problems at the bottom.

----------------------------------------------------------------------------------------------------------------

And Mr. Harbeck. Here's a comment i posted on that S3 Scribe Post Blog. And no, i didn't find it by searching "sliced bread" again. Instead it was "mini wheats" Ha. Just kidding.

http://exc-el.org.uk/blogs/s3scribeposts/2006/11/30/loans-hire-purchase/


So that's today's scribe post. Finish all those facts for tomorrow. Tomorrow's scribe will be......uh....MR. JUSTIN .

V 1.1. (some editing, fixed picture)
V 1.2. (updated defintions)
V 1.2.1 (added ratio link, ratio TV example)
V 1.3 (added more conversions, fixed problems)
V 1.4 (added comment link)

November 15th morning scribe

yeah i got stuck with this so might as well DO a good job .. thanks alot *coughMrHanleycough* haha jk

okay so in the morning the first thing we had to do was put that thing for square roots the order of the things were ....
that pink paper with that is out of 3o, the Perfect square chart, Journal 1 "which one is a perfect square", Journal 2 the one that you had to draw stuff ,Perfect square long paper, estimate sq.roots using chart&&building problem, estimate sq.roots using fractions, Recipe, Ouiz 1&2 with corrections, and then finally the test and corrections

then Harbeck said that it starts off pink and ends yellow .. or something like that haha =P

then Harbeck split us into groups .. we had a this small bag of pink cards .. well for my group and my group only .. we got white cards =P it had things like fractions , decimals ,percent , and pictures .

we got a white paper that had 5 boxes horizontally and 7 vertically .. one column and one row that said "Justify" . in the other boxes we had to do stuff .. just look at the picture below .. i reconstucted it on the computer .. because my scanner is broken =P haha

on the back we had to write somethings and here they are ..

Ratio :a comparison of two quantites that have the same unit of measure

Suppose that you have a bag on 52 marbles . You pour 15 marbles into your hand. The ratio of marbles in your hand to the number of marbles not in your hand is 15:37 and the fraction is 15/52

add a ratio column to your chart

then thats all the work we had in the morning .. we got more in the afternoon but i think mary already got that covered =)


okay .. thats the end of my scribe post .. theres a - starts with a "Q" and ends with a "Z" and has "ui" in the middle .... and no its not QZui ... haha its QUIZ!!! so study =)

ohh yeah since mary didnt pick a scribe i pick .... MICHAEL!!!! haha

My scribe post for the afternoon =)

This afternoon Harbeck was talking about Ratio....

In order to understand ration you have to understand what is a fraction? A fraction is part a whole...

Ratio

numertator/denominator = part/whole

1= 1:0, 8:0

3/4= 3:1, 3:4

1/2= 1:2, 1:1

2/5= 2:3, 2:1

1/3= 1:1, 1:2

1/4= 1:3, 1:4

Ratio tells how one number is related to another number. A ratio may be written as A:B or the phrase " A to B". A ratio of 1:5 says the second number is 5 times as large as the first. The following steps will allow determination of a number when one number and the ratio between the number given.

eg: Determine the value of B if A=6 and the ratio of A:B= 2:5

- Determine how many times the variable A is divisible by the corresponding portiong of the ratio. ( 6/2 = 3)

- Multiply this number by the portion of the ratio representing B (B*5=15)

- Therefore if the ratio of A:B is 2:3 and A=6 the B=5.

If any of you don't understand this here is a website that might help you understand it better:

http://www.mathleague.com/help/ratio/ratio.htm#ratio just scroll down and it will show you some examples. Don't Forget we have a Quiz on this tomorrow! Study hard!