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## Operations and Algebraic Thinking 189-200

### Unit 4: Lesson 2

Multiplication and division word problems# Multiplication word problem: soda party

CCSS.Math:

Sal uses a picture and repeated addition to solve a multiplication word problem. Created by Sal Khan.

## Want to join the conversation?

- How did people get the idea of division(11 votes)
- i don't know but division is hard and i like hard math(5 votes)

- why so many bottles of soda? #dentist very mad(7 votes)
- they are just representing using bottles of soda. (although if this was a real party I would go to it XD)(6 votes)

- what is 47698x689056= what(4 votes)
- does the guy switch every time?(4 votes)
- Wait.... I'm confused..... What does 2L means again?(1 vote)
- 2L just means 2 liters. L is short for liters, the basic metric measurement for amounts of fluid, and 2 liters (2L) is a standard size for a large bottle of soda.(4 votes)

- i do not get some of the videos(3 votes)
- What are liters?(2 votes)
- i love your math(2 votes)
- I love khan acadamy thank you for teaching me(2 votes)
- why did sal crossed of the "20 people are at the party(2 votes)

## Video transcript

So we're asked, "how many liters of
soda do we have for the party?" And they give us all of this other
information. I encourage you to pause this video
and think about which of this information you actually need to answer this first
question and then try to answer the question: "How many liters of soda do we have
for the party?" So pause now. Let's look at this information: "20 people are coming to the party."
This doesn't let us know how many liters we actually have. So we know we can ignore this. "We have purchased 5 bottles of soda for the party."
Well, this seems useful - we're going to have 5 bottles of soda. So that's 1... 2... 3.... 4.... and 5 bottles of soda.
That's this piece of information right over here. If only we now knew how much soda is in each bottle. "The party will last for 3 hours." This has nothing
to do with how many liters of soda we have. "Each bottle has 2 liters of soda." This
is interesting. This is 2 liters... this is 2 liters... this is 2 liters...
this is 2 liters... and that is 2 liters. If we wanted to figure out the total number
of liters of soda we have, We have 5 bottles, and each of them are
2 liters each. So we have 5 times 2 And what is that equal to? 5 times 2 is the same thing as
2 plus 2 plus 2 plus 2 plus 2 You have five 2's added together.
Let me write this down... Which is equal to: 2, 4, 6, 8, 10.
5 times 2 is 10. We have 10 liters of soda for the party.
We're able to answer it without even looking at this last one. This last one tells us how
many bottles of soda we had for the picnic last week. which doesn't seem related at all
to our current party.