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SuperKids Math Review
How to Subtract Fractions
Subtracting Fractions with COMMON Denominators
Example 1: Simple fraction subtraction
No reduction is possible, so we have found the answer!
Example 2: Reducing the fraction answer
Example 3: Subtraction with a mixed number
First convert the mixed number to an improper fraction:
Then reduce the fraction:
Subtracting Fractions with DIFFERENT denominators
Say you have the fractions 2/3 and 1/4
Select the denominator of the first fraction (3) and multiply the top and bottom of the second fraction (1/4) by that number:
These two fractions (8/12 and 3/12) have common denominators - the number 12 on the bottom of the fraction.
Subtract, using these two new fractions:
Say you have the fractions 3/5 and 2/7
Select the denominator of the first fraction (5) and multiply the top and bottom of the second fraction (2/7) by that number
These two fractions (21/35 and 10/35) have common denominators -- the number 35 on the bottom of the fraction.
We can now subtract, because the two new fractions have a common denominator:
Got it? Great! Then go to the SuperKids Math Worksheet Creator for Basic Fractions, and give it a try!
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