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## Numbers & Operations - The Real & Complex Number Systems 211-217

### Course: Numbers & Operations - The Real & Complex Number Systems 211-217>Unit 7

Lesson 5: Dividing fractions and whole numbers word problems

# Dividing whole numbers by fractions: word problem

Learn to solve a word problem that involves dividing a whole number by a unit fraction. Created by Sal Khan.

## Want to join the conversation?

• Can't you just multiply 4 and 5 in the beginning?
• Yes you could have, but you will be more sure of your answer if you do it Sal's way (even though he is basically doing that, but step by step).
• what is a potpurri?
• a mixture of dried petals and spices placed in a bowl to perfume a room.
• What is potpourri
• It seems to be there is two definitions of potpourri. The definition I know is "a little bit of everything" or "everything". Using context clues, I think potpourri is kind of like a trail mix of some kind of food. By trail mix, I mean, "a whole bunch of different types of foods". What kind of food, I don't know, but I hope I helped!
• Sal how do I make a fraction out of 5 and divide it by 1 half ( not a home work question) :)
• 5/1 and 5 divide by 1/2 equals 2 1/2 (i think)
(1 vote)
• what is potpourri?
• A mixture of dried petals and spices placed in a bowl or small sack to perfume clothing or a room
• Let’s say I had to do 4 divided by 1/2. 1/2 goes into 1 2 times, so I have to divide 4 by 2. So the answer is 2. Now for something a little harder. 12 divided by 1/6. Since 1/6 goes into 1 6 times, you do 12 divided by 6, which is 2. This is just the basics. Ask if you want a little more information.
• Ok, I'm confused, If I had 3 cups of something and only wanted a third of it would that equation not be 3 divided by 1/3. If so the answer is nine instead of one?
• Here is how I look at it. Words mean things. When you say "a third of it," the word "of" is the key: "of" means to multiply. So, "a third of it" which is "a third of 3 cups". Do a simple substitution of "times" for "of": "a third times 3 cups".

So 1/3 x 3 cups = 1 cup
• could you just say 4 times 5
• Yes, you could.. but some schools want you to show your work.
• do you get a different answer when you do 5/6divided by 2 or 2 dividded by 5/6