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.

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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.

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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)