Mulitiplying Fractions
http://www.khanacademy.org/math/arithmetic/fractions/multiplying_and_dividing_frac/v/multiplying-fractions
Word Problems
http://www.khanacademy.org/math/arithmetic/fractions/multiplying_and_dividing_frac/v/multiplying-fractions-word-problem
Dividing Fractions
http://www.khanacademy.org/math/arithmetic/fractions/multiplying_and_dividing_frac/v/dividing-fractions
Word Problems
http://www.khanacademy.org/math/arithmetic/fractions/multiplying_and_dividing_frac/v/dividing-fractions-word-problem