Main content

### Course: 4th grade > Unit 3

Lesson 1: Comparing with multiplication- Multiply by 1-digit numbers: FAQ
- Comparing with multiplication
- Comparing with multiplication and addition: giraffe
- Comparing with multiplication and addition: money
- Comparing with multiplication: magic
- Compare with multiplication
- Compare with multiplication word problems

© 2024 Khan AcademyTerms of usePrivacy PolicyCookie Notice

# Comparing with multiplication: magic

Sal solves a multiplication comparison word problem with Harry Potter characters. Created by Sal Khan.

## Want to join the conversation?

- can't we say 5 times 7 = 35(13 votes)
- Yes, you can do it that way or you could do 7 times 5 = 35.(8 votes)

- At2:00. What a difficult lenguaje. I'm from Catalonia and I'm losed. Can enybody explain what is he expleining?(9 votes)
- Ferran, el senor pregunta que si Hermione puede levantar un plumaje de aves Treinta y Cinco pies en el aire, y lo levanta Cinco veces mas alto de lo que Ron lo levanta, cuanto mas lo levanta? Bueno la respuesta seria 7, porque cinco multiplcado por siete es treinta y cinco. Buena suerte Ferran con sus estudios.(9 votes)

- I'm am still confused can someone explain this please

:((6 votes)- It says that Hermoine can lift the feather 5 times higher than Ron, so you just have to divide 35 by 5 that will give you the answer its 7 because 5 goes into 35 7 times(8 votes)

- can someone explain why they did it in a harder and longer way then just doing it quick and easy you could have just done 7x5 and you would get 35 and you know it would be 7(10 votes)
- because its for basic people(2 votes)

- can you multiply negative numbers with word problems(5 votes)
- chickenuggets are better than chicken(1 vote)

- When we learn a harder division how can this even help?!(6 votes)
- because you can figure out what 48 divdid by 4 is if you know what blank times 4 is(2 votes)

- that was a fast video(5 votes)
- You can change the speed in setting(3 votes)

- why was the vid so fast..:P(5 votes)
- Because it is one minute long.(2 votes)

- Does any one know if you’re able to swallow gum? I don’t if it’s editable or not or something,(3 votes)
- Technically chewing gum is supposed to be chewed and not swallowed, but it generally isn't harmful if swallowed. If you swallow gum, it's true that your body cannot digest it. However, it is considered edible according to the FDA. - まい(4 votes)

- how to do division cause I kind of dont get it 📟➗❌➕➖(1 vote)
- How we divide is simple. If we took the problem 20 divided by 5, this is where we divide. You take five and count up like so- 5, 10, 15, 20. That took us four times, so the answer is four.(7 votes)

## Video transcript

Ron and Hermione are
practicing lifting feathers into the air with magic. Hermione can lift a feather
35 feet into the air, which is 5 times as high as
Ron can lift a feather. How high can Ron lift a
feather with his magic? So Hermione, this 35 feet
is 5 times more than Ron. So to figure out
what Ron can do, we just take what Hermione
can do and divide by 5. So what's 35 divided by 5? Well, 5 times 7 is 35. So 35 divided by 5 is 7. So Ron can lift a feather
7 feet in the air. So let's check our answer. Now, if you have trouble
with this-- and we could also look at
the hints for this. So they show that Hermione can
lift a feather 35 feet, which is 5 times higher than Ron. So this could be the length
of how high Ron can raise it. And so, if you were
to actually divide 35 into 5 equal sections,
so 5 times question mark is 35, that's the same thing
as saying 35 divided by 5 is question mark. And 35 divided by 5 is indeed 7.