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SAI International School
CLASS – VI
SUB: Mathematics
CHAPTER-7: FRACTIONS
LESSON NOTES - 4
SUBTOPIC: ADDITION AND SUBTRACTION OF FRACTION
ADDITION AND SUBTRACTION OF LIKE FRACTION:
ADDITION AND SUBTRACTION 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.