Multiplication Facts
Games - http://www.multiplication.com/games/all-games
Practice all levels - http://www.multiplication.com/games/play/quick-flash-ii
Fractions
Addition video https://www.khanacademy.org/math/arithmetic/fractions/Adding_and_subtracting_fractions/v/adding
-fractions-with-like-denominators
Addition Practice https://www.khanacademy.org/math/arithmetic/fractions/Adding_and_subtracting_fractions/e/adding
_fractions_with_common_denominators
Subtraction Video https://www.khanacademy.org/math/arithmetic/fractions/Adding_and_subtracting_fractions/v/subtrac
ting-fractions
Subtraction Practice https://www.khanacademy.org/math/arithmetic/fractions/Adding_and_subtracting_fractions/e/subtra
cting_fractions_with_common_denominators
Addition & Subtraction with different denominators https://www.khanacademy.org/math/arithmetic/fractions/fractions-unlike-denom/v/adding-fractionswith-unlike-denominators
Multiplication https://www.khanacademy.org/math/arithmetic/fractions/mixed_number_mult_div/v/multiplyingmixed-numbers
Multiplication Practice - http://www.aaamath.com/mul-mixed.htm
Decimals
Rounding - http://www.sheppardsoftware.com/mathgames/decimals/scooterQuestDecRound.htm