Math Decimals Revision : Watch the Videos at the right-hand side first if you need to

Decimals to Fractions

https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-pre-alg/e/converting_decimals_to_fractions_1

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-fracs-to-decimals/v/decimals-and-fractions

Revision - Fractions to Decimals : 
https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-fracs-to-decimals/v/converting-fractions-to-decimals-example

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-fracs-to-decimals/v/converting-fractions-to-decimals--ex1

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-fracs-to-decimals/v/converting-fractions-to-decimals--ex2

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-fracs-to-decimals/e/converting_fractions_to_decimals


Word Problems
https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-multistep-word-probs/v/multistep-word-problems-example-1

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-multistep-word-probs/v/multistep-word-problems-example-2

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-multistep-word-probs/v/multistep-word-problems-example-3

Revision: Addition and Subtraction of Decimals Word Problems

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-arithmetic-operations/cc-6th-add-sub-decimals/e/adding_and_subtracting_decimals_word_problems

Multiplying Decimals

https://www.khanacademy.org/math/arithmetic/decimals/multiplying_decimals/v/intro-to-multiplying-decimals

https://www.khanacademy.org/math/arithmetic/decimals/multiplying_decimals/e/multiplying_decimals_0.5

https://www.khanacademy.org/math/arithmetic/decimals/multiplying_decimals/v/more-intuition-on-multiplying-decimals