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SUBTRACT MIXED NUMBES WITHOUT RENAMING

When subtracting mixed numbers, subtract the fractions, subtract the whole
numbers, then reduce (if necessary).
Ex. 1.

Subtract fractions Subtract whole numbers
 


Ex. 2.
Before subtracting the fractions, the LCD must be found.

Convert to LCD Subtract Fractions Subtract whole numbers Reduce
if needed

Ex. 3.
Before subtracting the fractions, the LCD must be found.

Convert to LCD Subtract Fractions Subtract whole numbers Reduce

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PRACTICE: Subtract Mixed Numbers

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Objective 4: SUBTRACT MIXED NUMBERS WITH RENAMING .

Sometimes a larger fraction is being subtracted from a smaller fraction.
In this case, it is necessary to borrow "1" from the whole number portion
of the mixed number.
Ex. 1. Before subtracting, change the
Change the mixed number it into the improper fraction

Subtract fractions Subtract whole numbers Reduce

If the fractions have different denominators as in the following:

Ex. 2.
 

First Convert to LCD
7 1(4)

Since 4/20 is smaller than 5/20 it is necessary to borrow 1 from the 7
before subtracting.
This step is accomplished by changing the
Now, change to the improper fraction

Subtract Fractions Subtract Whole Numbers

Sometimes a mixed number is being subtracted from a whole number.
In this case, it is necessary to borrow "1" from the whole number portion.
Ex. 1.
Before subtracting, change the 8 to 7 + 1
Change the "1" into the improper fraction

Subtract fractions Subtract whole numbers

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PRACTICE: SUBTRACT MIXED NUMBERS

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SUBTRACTION OF FRACTIONS AND MIXED NUMBERS
ANSWERS TO PRACTICE PROBLEMS
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