Name: Dividing by a two digit number
Uploaded: 2020-03-27T17:42:45.000Z
Duration: 4 min 13 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...

Present continuous

- [Instructor] In this video we're going to get

a little bit of practice divided by a two digit number.

The imperative

Pause this video and see if you can figure out

figure out what that remainder is going to be.

All right, now let's work on this together.

a little trial and error using estimation.

Well, 32 doesn't go into four at all, so then we'll move on.

Well it's pretty clear that 32 goes one time into 47.

So I'll put the one right over there, above the seven in 47.

And if you're saying, "Hey, how did Sal know that?"

Well, just remember, two times 32 would be 64.

So 32 goes into 47 one time, and we multiply one times 32.

One times two is two, one times three is three.

And the way you make sure that you did that step right

is whatever we get over here should be less than 32.

If whatever we have here is 32 or greater,

that means we could of had a larger number up here.

But then our next step is we bring down the eight

and we say, "How many times does 32 go into 158?"

And actually this is for kicks, let's just try that out.

we will have one 10 there, carry the one.

160 is larger 158 so five is too much there.

And then this is right, 'cause 30 is less than 32.

"this is close to 300, so maybe it's 10."

But 10 times 32 would be 320, so that'd be too much.

So I feel good about nine as my estimate.

We're actually going to have to do a little regrouping here.

you would add 12 to get to 300 and then one more, 13.

So you might be able to do it in your head

that this is going to be 13, or you could regroup.

"one is less than eight, can I regroup from the 10s place?

"No, I have nothing there so I have to regroup

"So I'm gonna take one of those hundreds,

"so I have nine 10s left, and give it to the ones place

"And 11 minus eight is 3, nine 10s minus eight 10s

And so there we have it, this is less than 32.

and so we're left with the remainder of 13.

Subtitles ListPlay Video

Dividing by a two digit number

figure

practice

tackle

tricky