g)+Using+Fractions

What is a fraction? Posted by: **DummyDerrick** A fraction is a part of a whole number, for example if I eat 1 slice of pizza out of the whole (4 slices), I would have 3/4 left.

Posted by: **Craxyjosh** A fraction is a concept of a proportional relation between an object part and the whole. A fraction is an example of a specific ratio in which to numbers are connected in a part-whole relationship.

How Do You Reduce a Fraction?

Posted by: **DummyDerrick** You can reduce it by dividing the numerator and the denominator by a number. Ex. 9/27 = 3/9 if you divide it by 3.

Posted by: **CraxyJosh** You can reduce it by finding a number that can be divisable by the neumerator and the denominator. Ex. 63/70 = 9/10 if you divide 63 by 7 and the 70 by 7.

What is an equivalent fraction?

Posted by:**DummyDerrick** It is a fraction that looks different, but really means the same thing. for example, 75/100 is the same as 3/4

How do you find equivalent fractions?

Posted by: **DummyDerrick** If the numerator and the denominator are whole numbers, and if they can be divided or multiplied into each other.

Posted by: **Craxyjosh** if the numerator and the denominator both can be divided by a common factor than you can make an equivalent fraction. By dividing the numerator and the denominator by the same numeral. Ex: 5/10 is equal to 1/2

What is cross multiplication?

Posted by: **Craxyjosh** You cross multiply when you have two fractions and you multiply the denominator of the first number by the numerator of the second number. And then you multiply the numerator of the first number by the denominator of the second number.

How do you add fractions?

Posted by: **DummyDerrick** You can add fractions easily if the denominator, (bottom number) is the same. Ex. 1/8 + 6/8 = 7/8

Posted by: **jchen727** But what if they aren't, like, 2/5+1/3? Posted by: **Craxyjosh** You just add the denominator with the other denominator and the numerator with the other numerator. Posted by: jchen727 i thought that you find a number they both multiply into and then multiply the number so it works. ie: 2/5+1/3=11/15 2/5x3=6/15 1/3x5=5/15 5/15+6/15=11/15 How do you multiply and divide fractions?

Posted by: **xWISEGUYx** When we divide fractions, we multiply the first fraction with the inverse of the second fraction. To multiply fractions, multiply the numerators of the fractions.

Posted by: **Coconut Cracker** To multiply fractions:
 * 1) Simplify the fractions if not in lowest terms.
 * 2) Multiply the numerators of the fractions to get the new numerator.
 * 3) Multiply the denominators of the fractions to get the new denominator.

There are 3 Simple Steps to Divide Fractions:
||
 * Step 1. Turn the second fraction //(the one you want to divide by)// upside-down (this is now a [|reciprocal] ).
 * Step 2. [|Multiply] the first fraction by the **reciprocal** of the second.

Step 3. <span style="font-family: Arial, Helvetica, sans-serif;">[|Simplify] <span style="font-family: Arial, Helvetica, sans-serif;"> the fraction (if needed) ||

<span style="font-family: Arial, Helvetica, sans-serif;">Ex: || <span style="font-family: Arial, Helvetica, sans-serif;">÷ || <span style="font-family: Arial, Helvetica, sans-serif;">1 || || <span style="font-family: Arial, Helvetica, sans-serif;"> ||^  || || <span style="font-family: Arial, Helvetica, sans-serif;">4 ||^  ||
 * <span style="font-family: Arial, Helvetica, sans-serif;">1
 * <span style="font-family: Arial, Helvetica, sans-serif;">
 * <span style="font-family: Arial, Helvetica, sans-serif;">2

<span style="font-family: Arial, Helvetica, sans-serif;">Step 1. Turn the second fraction upside-down (the **reciprocal**):

|| <span style="font-family: Arial, Helvetica, sans-serif;"> || <span style="font-family: Arial, Helvetica, sans-serif;">4 || || <span style="font-family: Arial, Helvetica, sans-serif;"> ||^  || || <span style="font-family: Arial, Helvetica, sans-serif;">1 ||^  ||
 * <span style="font-family: Arial, Helvetica, sans-serif;">1
 * <span style="font-family: Arial, Helvetica, sans-serif;">
 * <span style="font-family: Arial, Helvetica, sans-serif;">4

<span style="font-family: Arial, Helvetica, sans-serif;">Step 2. Multiply the first fraction by the **reciprocal** of the second:

|| <span style="font-family: Arial, Helvetica, sans-serif;">× || <span style="font-family: Arial, Helvetica, sans-serif;">4 || =<span style="font-family: Arial, Helvetica, sans-serif;"> = || <span style="font-family: Arial, Helvetica, sans-serif;">1 × 4 || <span style="font-family: Arial, Helvetica, sans-serif;"> || <span style="font-family: Arial, Helvetica, sans-serif;">4 || || <span style="font-family: Arial, Helvetica, sans-serif;"> || <span style="font-family: Arial, Helvetica, sans-serif;"> || <span style="font-family: Arial, Helvetica, sans-serif;"> ||^  ||^   ||^   || || <span style="font-family: Arial, Helvetica, sans-serif;">1 || <span style="font-family: Arial, Helvetica, sans-serif;">2 × 1 || <span style="font-family: Arial, Helvetica, sans-serif;">2 ||^  ||^   ||^   || <span style="font-family: Arial, Helvetica, sans-serif;">Step 3. Simplify the fraction: || <span style="font-family: Arial, Helvetica, sans-serif;">= || <span style="font-family: Arial, Helvetica, sans-serif;">**2** || ||^  ||^   || ||^   ||^   || <span style="font-family: Arial, Helvetica, sans-serif;">(If you are unsure of the last step see the [|equivalent fractions] page)
 * <span style="font-family: Arial, Helvetica, sans-serif;">1
 * <span style="font-family: Arial, Helvetica, sans-serif;">
 * <span style="font-family: Arial, Helvetica, sans-serif;">2
 * <span style="font-family: Arial, Helvetica, sans-serif;">4
 * <span style="font-family: Arial, Helvetica, sans-serif;">
 * <span style="font-family: Arial, Helvetica, sans-serif;">2

These answers can be found on ** <span style="font-family: Arial, Helvetica, sans-serif;">http://www.mathsisfun.com/math.html**