Name: 除以十分之一和百分之一時的模式 (Pattern when dividing by tenths and hundredths)
Uploaded: 2021-01-14T10:14:11.000Z
Duration: 4 min 46 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

情態助動詞 A2

- [Instructor] Let's see if we can figure out

祈使句型

Pause this video and see if you can figure that out.

Alright, now let's work through it together

and there's a couple of ways that we can approach it.

One way is to think about everything in terms of tenths.

And so that's gonna be 20 tenths divided by,

we know this is the same thing as one tenth.

and if I divide it into groups of one of that something,

Well I'm going to have 20 equal groups of one.

So 20 tenths divided by one tenth is equal to 20.

Another way that you could approach that is you could

rewrite the 0.1, the one tenth, as a fraction.

Well, we know that dividing by a tenth is the same thing

So this is going to be equal to two times.

And that gets us to the same place that we had before.

And that's good that we got to the same answer.

Otherwise, these would not be equivalent methods.

So let's say we wanted to figure out what six divided

So I'll rewrite this as 60 tenths divided by one tenth

When we divided by a tenth, we ended up multiplying by 10.

When we divide by a tenth, we are multiplying by 10.

And you could do the same thing as we saw up here.

You could say six divided by one tenth is the same thing

as six divided by one tenth written as a fraction

You can say six times 10 or six times 10 over one.

Six times 10 over one or which is the same thing as 10

which is once again going to be equal to 60.

Divide by a tenth same thing as multiplying by 10.

Now what about if we dealt with hundredths?

So let's say we wanna figure out what seven divided

Pause the video and try to figure it out.

One whole is equal to a hundred hundredths

so seven wholes is equal to 700 hundredths.

If I have 700 of something and if I'm dividing it into equal

is the same thing as multiplying by a 100.

Now you could also rewrite this as a fraction if you like

so that some of the principles we saw up here still apply.

So we could rewrite this as seven divided by one hundredth.

And so this is going to be the same thing as seven times

Seven times 100 which once again, will get you to 700.

Divide by a tenth, same thing as multiplying by 10.

Divide by a hundredth, same thing as multiplying by a 100.

字幕列表影片播放

除以十分之一和百分之一時的模式 (Pattern when dividing by tenths and hundredths)

equivalent

approach

figure

pattern