Go to "math-drills.com/fractions." It is a very reliable and helpful site that will prove to enhance your knowledge of fractions. If you want to impress people, try learning how to multiply and divide fractions on your own with the help of that site!
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There are plenty of math instruction websites that have worksheets and other practice materials accessible. One of the most popular is Math Aids, which has a comprehensive site that includes fraction worksheets. Biglearners.com is another great and free website for preschool-5 children. They have a very comprehensive and organized content as well (math - language arts).
a mixed number is a whole number with a fraction, ie. 2 3/4 Adding mixed numbers involves adding the whole numbers, then adding the fractions, then reducing the fraction and if it is improper, changing it to a whole number with a fraction and adding that whole number to the other whole number answer.
They are not. If you make a serious effort to understand fractions, they are quite easy.
Subtracting a fraction is the same as adding its negative.
The process is still that of addition.