Converting Between Improper Fractions and Mixed Numbers

Learning Outcomes

  • Convert mixed numbers to improper fractions
  • Convert improper fractions to mixed numbers

In an example in the previous module’s review section, we converted the improper fraction 116 to the mixed number 156 using fraction circles. We did this by grouping six sixths together to make a whole; then we looked to see how many of the 11 pieces were left. We saw that 116 made one whole group of six sixths plus five more sixths, showing that 116=156.

The division expression 116 (which can also be written as 6)11¯ ) tells us to find how many groups of 6 are in 11. To convert an improper fraction to a mixed number without fraction circles, we divide.

Example

Convert 116 to a mixed number.

Solution:

116
Divide the denominator into the numerator. Remember 116 means 11÷6
.
Identify the quotient, remainder and divisor.
Write the mixed number as quotient (remainderdivisor) . 156
So, 116=156

 

Try it

 

 

Convert an improper fraction to a mixed number.

  1. Divide the denominator into the numerator.
  2. Identify the quotient, remainder, and divisor.
  3. Write the mixed number as quotient remainderdivisor .

Example

Convert the improper fraction 338 to a mixed number.

 

try it

Now you can watch worked examples of how to convert an improper fraction to a mixed number in the following video.

In an earlier example, we changed 145 to an improper fraction by first seeing that the whole is a set of five fifths. So we had five fifths and four more fifths.

55+45=95

Where did the nine come from? There are nine fifths—one whole (five fifths) plus four fifths. Let us use this idea to see how to convert a mixed number to an improper fraction.

Example

Convert the mixed number 423 to an improper fraction.

 

try it

 

Convert a mixed number to an improper fraction.

  1. Multiply the whole number by the denominator.
  2. Add the numerator to the product found in Step 1.
  3. Write the final sum over the original denominator.

Example

Convert the mixed number 1027 to an improper fraction.

 

Try it

In the following video we show more example of how to convert a mixed number to an improper fraction.