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Lesson 4: Division with area models

# Division with area models

Sal uses area models to divide 268÷2 and 856÷8.

## Want to join the conversation?

• this is super hard but kinda easy. But hard. how do i do this?
• Use your math skills while using the other things you,ve got.
• what does he mean by square units?
• If the unit of measurement(feet,centimetre, kilometer) is not identified or specified you use square units
• don't understand... watched the lesson like 5 times...
• Division with Area Models
• How does he draw this good on a computer?
• with a mouse and idk practice
• so pertend you were having a problen with a division question. Division is literally multiplication but backwards so if the question was 12 divided by 3 how can you make 12 my multiplication
• You can make 12/3 into multiplication by asking the question: "What times 3 is 12?" It's the same way with addition and subtraction. The difference/quotient added/multiplied to the number that subtracts/divides another is the number that was being subtracted/divided.
• How would we know if the little line is a certain number?
• Hmm...I think they'd make it on a graph or label the lines or something. But in this case, he just said the vales...
• hi you should help me for a tip
• what does sqare unit mean
• Square Unit is like Bar Models, A little bit like it.
• what if you divided by 0??
• (EDIT: This was a response to a question about division, but the user deleted their comment.)

Hey,

you cannot ever divide by zero. Remember this very well, because it's going to be important later on in math courses like Algebra. Dividing by zero even breaks old mechanical calculators and shows errors on regular calculators.

So why can't we divide by zero? Try imagining that the result of division is how many times you should multiply the number your dividing by to get the number your dividing. For example 4 ÷ 2 = 2, so we can add the number two two times to get four (2 x 2 = 4).

So what does that mean for dividing by zero? It would mean we would have to add 0 some amount of time to get the number we were dividing with. So let's try it out:

7 ÷ 0 should be 0 + 0 + 0 + 0 + 0... wait how can we add up a number representing "nothing" into a number representing "something"? Impossible, right? Yes. Even if we will add 0 infinetly many times we cannot get something out of nothing.

So to answer your question dividing by zero wouldn't have an answer as far as mathematicians know. So dividing by zero is basically impossible.