Page 1 - Lesson Note

SAI International Residential School
CLASS – VI, SUB: MATH

LESSON NOTES
CHAPTER-7: FRACTIONS

SUBTOPIC: ADDITION AND SUBSTRACTION OF FRACTION.
ADDITION AND SUBSTRACTION OF LIKE FRACTION:
STEP 1:
Obtain the fractions.
STEP 2:
Add/ Subtract the numerators of all fractions.
STEP 3:
Retain the common denominator of all fractions.
STEP 4:
Write the fraction as Result in Step II / Result in Step III.
STEP 5: Convert to simplest form if possible.
EXAMPLE :

ADDITION AND SUSTRACTION OF UNLIKE FRACTIONS:

In addition, and subtraction of unlike fractions, we first convert them into corresponding
equivalent like fractions and then they are added or subtracted.

STEP 1: Obtain the fractions and their denominators.
STEP 2: Find the LCM (least common multiple) of the denominators.
STEP 3: Convert each fraction into an equivalent fraction having its denominator equal
to the LCM (least common multiple) obtained in Step II.

STEP 4: Add or subtract like fractions obtained in Step III.

STEP 5: Reduce the fraction to simplest form if possible.