Sunday, March 11, 2007

rivka's super scribe *Equivalent Fractions*


Equivalent fractions >> are fractions that have the same value or represent the same part of an object.

example: If a pie is cut into two pieces, each piece is also one-half of the pie. If a pie is cut into 4 pieces, then two pieces represent the same amount of pie that 1/2 did. 1/2 is equal to 2/4 because 1/2 is the lowest term of 2/4, and when you crossed multiply 1/2 and 2/4, they have the same product.

I used continuous division in getting the lowest term of 2/4...

you can also cross multiply the fractions to know if the fractions are equivalent...

or you can get their decimal to know if the fractions are equivalent...

well that's all i know about equivalent fraction... hope you understand my explanations.. =D
just comment if you have questions or if i did something wrong in my super scribe... ok??
-rivka cabalquinto 8-17

Amy's Scribe Post ; Common Denominators

What is a Common Denominator?

A Common Denominator is 2 or more fractions that have the same denominator.

There are 2 simple rules to solving Common Denominators if they don't have the same denominators:

There are also many ways into solving Common Denominators. Look at the bubbleshare for 1 kind of example.

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There is also another way when you don't have to cross multiply to get the Common Denominator. That way is when the denominators have the same factor.

I hope you understand my explanations of Common Denominators and I hope this explanation will help you throughout the future :)

SUPER SCRiBE: Subtracting Fractions

My super scribe is about subtracting fractions. Here are the steps :

CHECK if they are the same type of fractions. (Mixed/ Improper/ or Proper) If they are not the same, convert them so that they are.
Then check if they have the same denominator. If they do not, make them equal by either cross multiplying or multiplying it by a number that will make it equal into the other denominator.

Once the denominators of the fractions are the same(equal), you subtract the numerators. If possible, simplify (reduce) the fractions. Whatever you get from subtracting the numerators, you put over the denominator. The result is your answer.

>> Marielle D. 8-17

Saturday, March 10, 2007

Super Scribe : LCD =)


First, what is LCD?
Least Common Denominator ~> It is the smallest common factor of the denominator.
[!] We use the LCD to make fraction operations easier.

For example, I have 1/4 and 3/5. Let's try to make the denominators the same by using the Least Common Multiply method:

Our LCM is 20, which will also be our denominator.

Important: What you do to the bottom of the fraction, must also be done to the top.

This is our LCD:

> A useful link that talks about LCMs and LCDs (also provides practice exercises).

> Find about Adding Fractions:
Nicole's Scribe.
> Comments are appreciated, thank you.


Friday, March 09, 2007

NiCoLe'S sUpEr ScRiBe PoSt....

What is "FRACTION" ?
- A fraction is a number written in the form: N/D. Where N is called "NUMERATOR" and D is called the "DENOMINATOR".
- It also expresses part of a group.
-If the fractions have the same denominator, their sum is the sum of the numerators over the denominator. We do not add the denominators. But we can reduce it if necessary.
3/8 + 2/8 = 5/8
- However, if the fractions have different denominators:
1) First, find the Least Common Denominator or LCD.
2) Then write equivalent fractions using this denominator.
3) Add the fractions. Reduce if necessary.
3/4 + 1/6 = ?
The Least Common Denominator(LCD) is 12.
3/4 + 1/6 = 9/12 + 2/12 = 11/12.
2/3 + 2/7 = ?
The Least Common Denominator(LCD) is 21
2/3 + 2/7 = 14/21 + 6/21 = 20/21
===>>> If there is something wrong with my report, you are welcome to write a comment.....:)

Thursday, March 08, 2007

Adding fractions

I chose to do Adding Fractions as my scribe post. There are about 3 different ways of adding fractions. Look at the bottom.

These are the rules
These steps show you how you can convert back and forth.

1. First way is when the denominators are the same. These are the easiest fractions to add.

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2. Second way is when denominators share a common denominator.

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3. Third way is when the denominators don't share a common denominator so you have to cross multiply.

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Hope you have learned somethings about adding fractions.