Name: Fraction multiplcation on the number line
Uploaded: 2020-03-27T17:35:07.000Z
Duration: 3 min 1 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Future simple

- [Instructor] So, what we're gonna think about

Present continuous

To-infinitive

Pause this video and try to think about it on your own.

Alright, now let's work through this together.

And, to help us, I will use a number line,

and let's say that each of these hash marks

8/3, and 9/3, and so where is 2/3 times one?

Well, 2/3 times one is just going to be 2/3,

we just take a jump of 2/3, so that is times 1.

If we multiply by, or if we take 2/3 times two,

so one 2/3, two 2/3, three 2/3, and then four 2/3.

You could view that as 2/3 plus 2/3 plus 2/3 plus 2/3,

So, notice, 2/3 times four is equal to 8/3.

and think about what are ways to represent

And, on Khan Academy, we have some example problems

so I thought it would be good to do an example like that.

Instead of each of these lines representing a third,

why did I write 5/6, my brain is going ahead,

And, let's say we were to see something like this.

So, if you were to just see this representation,

so I'm going to try to draw it like this,

so if you were to just see this representation,

What type of multiplication is that trying to represent?

Well, you could view that as 3/2 plus another 3/2

each of these jumps are three 1/2, or 3/2.

So, you could view this as 3/2 plus 3/2 plus 3/2,

So, you can also view this as doing the same thing

as three times 3/2, and what are these equal to?

Well, 3/2 plus 3/2 plus 3/2, or three times 3/2,

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Fraction multiplcation on the number line

represent

bit

draw

brain