See also the Dr. Math FAQ: 3D and higher Browse Middle School
Fractions & Percentages Stars indicate particularly interesting
answers or good places to begin browsing. Selected answers to
common questions: Finding a least common denominator (LCD).
Comparing/ordering fractions; equivalent fractions. Improper
fractions and mixed numbers. Converting fractions to/from
decimals. Fractions and repeating decimals. Finding a
percentage. - Adding and Multiplying Fractions [05/31/2001] Why
do I have to find a common denominator to add fractions, but not
to - Adding and Subtracting Algebraic Fractions [8/24/1996] How
do I add and subtract fractions with the same denominator? -
Adding and Subtracting Percents [6/28/1996] Could you please
explain how to add and subtract percents? - Adding Fractions
[05/21/2002] How do you add fractions? - Adding Fractions That
Have Variables [03/24/2002] 9a/10 + 2/5. I have the answer in
the back of the book but I don't know how to solve it. - Adding
Tax and Tip [07/19/1998] In pricing ou