OPERATIONS ON FRACTIONS

1. ADDITION AND SUBTRACTION

         A. Similar Fractions
               Simply add or subtract the numerators and retain their denominators.
               example: 1/8 + 4/8 = 5/8

         B. Dissimilar Fractions
               Find the LCD of the fractions first then change them to their equivalent fraction using the
               LCD. Proceed with addition or subtraction as in similar fractions.
               example: 1/2 +1/3 = 3/6 + 2/6 = 5/6 

      2.  MULTIPLICATION
           Multiply first the numerators then multiply the denominators. Write the answer in lowest
           terms.
           example: 2/3 x 3/5 = 6/15 = 2/5

     3. DIVISION
          To divide fractions, multiply the dividend to the reciprocal of the divisor.
          example: 7/15 divided by 3/5 = 7/15 x 5/3 = 35/45 = 7/9

 This chart could be helpful, try watching the video as well.

Try solving for the following:
1. 2/9 + 6/9
2. 7/11 -3/11
3. 3/4 + 1/12
4. 1/2 - 3/7
5. 8/9 x 2/5
6. 4/3 x 3/4
7. 2/7 x 5/8
8. 27/35 divided by 9/25

You may use this online fraction calculators to check your answer. 

 Did you get all the items correctly?

Now, try these games to test some more your mastery. 

Here are more exercises for you!

 

GETTING TO KNOW FRACTIONS

FRACTIONS

• used to represent part of a whole or part of a set
• expressed in the form p/q

                                                  

*FRACTIONS MAY BE CLASSIFIED AS SIMILAR OR DISSIMILAR, PROPER OR IMPROPER
SIMILAR  FRACTIONS
      -fractions which have the same denominators
       example:1/5, 3/5, 4/5

DISSIMILAR FRACTIONS
      -fractions which have different denominators
       example: 1/2, 2/13, 5/8

PROPER FRACTIONS
      -the numerator is less than the denominator
       example: 1/3, 6/7, 4/10

IMPROPER FRACTIONS
      -the numerator is greater than the denominator
       example: 8/7, 13/2,  5/3

***EQUIVALENT FRACTIONS
      -Equivalent fractions name the same number but use different terms.
      examples: 1/2 and 3/6, 2/3 and 4/6
 
      THIS CHART MAY HELP YOU VISUALIZE SIMILAR FRACTIONS.

     

THESE VIDEOS WILL LET YOU UNDERSTAND MORE FRACTIONS.

 

paper folding using fractions