Fractions and mixed numbers are often used in everyday life. Discuss a real-life example in which you would need to add, subtract, multiply, or divide fractions or mixed numbers, and show the math!

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tjbrewer eNotes educator| Certified Educator

I have a Recipe that calls for 1 cup of uncooked rice.  Rice expands 3 fold during cooking.  I have `2 1/2` cups of cooked rice.  How much uncooked rice to I need to add to get the appropriate amount.  To find how much rice I would have had, uncooked, I need to divide the volume of the cooked rice by 3.  `2 1/2 -:3=5/2 -: 3/1=5/2 xx 1/3=5/6` I have the equivalent of 5/6 cup of uncooked rice.  To find how much I need to add, I have to subtract 5/6 from one.  `1-5/6=6/6 - 5/6=1/6` I need 1/6 cup of uncooked rice to complete my recipe. 

There you have division and subtraction of fractions and mixed numbers.  And this did actually happen to me just a few days ago.