Video and Examples
These two videos will show you how to subtract fractions that require regrouping. Sample
To subtract fractions that require regrouping, there are four steps you must follow:
 Rename with common denominators
 Regroup the first fraction
 Subtract the whole numbers and numerators
 Simplify (if necessary)
The problem  
Rename with common denominators  
Regroup the first fraction  
Subtract  
Simplify (if necessary)  not needed on this problem 
Step 1: Model the first number 
Step 2: Regroup the first number 
Step 3: Subtract 
Step 1: Model the first number 
Step 2: Regroup the first number 
Step 3: Subtract 
So far, the examples shown have not involved fractions with different denominators. Before subtracting fractions with different denominators, you must first rename both fractions with a common denominator.
Step 1: Rewrite the problem with common denominators 
Step 2: Model the first number 
Step 3: Regroup the first number 
Step 4: Subtract 
In summary, subtracting fractions that require regrouping is a 4step process:
 Rewrite the problem using common denominators
 Model the first number
 Regroup the first number by cutting one whole into fractional parts
 Subtract the fractions
For more practice with fractions, please try this Fraction Calculator.
SelfCheck
Question 1

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Question 2

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Question 3

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