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Make sure that the problem is asking for an improper fraction and not a mixed number.
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If you are asked to rename a mixed number into its simplest form, and specifically told to keep the form as a mixed number instead of an improper fraction, you can save time by simplifying the fraction portion of the original mixed number without first changing it into an improper fraction.
Note, however, that some problems may ask you to write your final answer as a mixed number instead of an improper fraction.
The process for simplifying the fraction portion of the mixed number is the same as it is for simplifying the value as an improper fraction.
Get a calculator and scratch paper Know that the formula to remember for converting the mixed fraction to an improper fraction is (denominator x whole number) + numerator.
For mixed numbers, rewrite the mixed number as an improper fraction.
Pick out an improper fraction.
Convert each integer and mixed number into an improper fraction.
Convert your second mixed number to an improper fraction.
As 9/5 is an improper fraction, to make it a proper fraction, divide 5 and 9.
Like an improper fraction, a mixed number represents an amount that is greater than a whole.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com