Fraction study guides

Introduction :

A fraction is a number that can represent part of a whole. The earliestfractions were reciprocals of integers: ancient symbols representing one part of two, one part of three, one part of four, and so on. A much later development were the common or "vulgar" fractions which are still used today.) and which consist of a numerator and a denominator, the numerator representing a number of equal parts and the denominator telling how many of those parts make up a whole.

(Source wikipedia)

Types of fraction in study guides:


Here we are going to know the types of fractions for solving and simplifying fractions in study guides

Proper Fraction - Numerator is lesser that denominator

Improper Fraction - Numerator is greater that denominator

Mixed Fraction - fraction with the whole number

Equivalent Fraction - denominator and numerator are multiplied by the same number


Description of different kinds of fractions in study guides:


Simplifying of Proper Fraction:

Example:

`15/18 ` (divide both denominator and numerator by same number 3)

`5/6`

Simplifying of Improper Fraction:

Example:

`18/15` (divide both denominator and numerator by same number 3)

`6/5`

Simplifying Mixed Fraction:

Example:

`5 ` `1 /10` (multiply the whole number 5 by the denominator 10 and then add this product result with the numerator)

`((5 * 10) +1)/10`

`51/10`

Simplifying Equivalent Fraction:

Multiply or divide the both numerator and denominator. erator by the same number 2. So we get

`6/10 = (6 * 2)/ (10 * 2) = 12 / 20`

 

`6/10=(6-:2)/(10-:2)=3/5`


Example for fraction study guides:


Fractions for addition:

Example: `12/10 +13/10`

If the denominators are same, we will do like belo

Fractions are added.`(12+13)/10` .

therefore the resultant fraction is `25/10` (divide both denominators and numerators by same number 5)

the result for the addition fraction is `5/2`

Example:`12/10 +13/9`

If the denominators are not same, we will find least common divisor. The lease common divisor for 10 and 9 is 90.

In `12/10` the denominator 10 is 9 times in the least common divisor. so we will multiply the numerator 12 by 9. 12 * 9 = 108.

In `13/9` the denominator 9 is 10 times in the least common divisor. so we will multiply the numerator 13 by 10. 13 * 10 = 130

Now, we can add the denominator. so we will get `(108+130)/90= 238/90`

Fractions for subtraction:

Example: `12/10-13/10`

If the denominators are same, we will do like belo

Fractions are subtracted.`(12-13)/10`

therefore the resultant fraction is `-1/10`

Example:`12/10-13/9`

If the denominators are not same, we will find least common divisor. The lease common divisor for 10 and 9 is 90.

In `12/10 `  the denominator 10 is 9 times in the least common divisor. so we will multiply the numerator 12 by 9. 12 * 9 = 108.

In `13/9` the denominator 9 is 10 times in the least common divisor. so we will multiply the numerator 13 by 10. 13 * 10 = 130

Now, we can add the denominator. so we will get `(108-130)/90= -22/90`

Computing fractions for multiplication:

`2/4* 4/3`

Here numerators are multiplied by numerators and denominators are multiplied by denominator and finally, simplified

`(2*4)/(4*3)`

`8/12 ` (divide both numerator and denominator by the same number 4)

`2/3`

Therefore the result for the multiplication fraction is `2/3`

Computing fractions for division:

`4/3-:3/4`

Firest we have to find  reciprocal for the second fraction is `3/4` .Then we have to multiply this reciprocal with dividend fraction like below

`4/3 * 4/3`

Therefore the result is `16/9`