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### Course: Arithmetic>Unit 10

Lesson 4: Multiplying fractions and whole numbers word problems

# Multiplying fractions word problem: milk

Sal solves a multiplication fraction word problem about milk. Created by Sal Khan.

## Want to join the conversation?

• how is 6/1 = to 6
• because 1/1 is equal to 1 whole so 6/1 is equal to 6
• I got confused about something about halfway through. How exactly does 20/5 equal 4??
• 20 ÷ 5 = 4. If the fraction is improper check if you can divided the numerator by the denominator.

Happy to help!
• because 1/1 is equal to 1 whole so 6/1 is equal to 6
• I still don't get it
What do you meen
(1 vote)
• I got confused about something about halfway through. How exactly does 20/5 equal 4??
• Why cant sal figure this out on his own?does he have to waste my time?/
• is the 1 in the beginning of the video under the 6 (6/1) supposed to make it easier or can it be optional? (is it necessary?)
• Yes it's necessary because you may forget that you need to multiplied the six by the other top number and the one by the bottom number but if you didn't have the 1 you might forget to leave the bottom number alone and might accidentally multiply it also by six and end up getting the problem wrong. So I guess it is not completely necessary but it is good to have there as a extra little tool to help you not mess up on the problem. I hope this helped you please get back t o me if it didn't or if you have any other questions about this or any other topic in khan adademy. I will answer it in the best way I can. 😃