This is one, tens, hundreds.

And instead of squaring it this time,

I need to make sure that they are all working properly.

AB 22. And another two digit number, sir?

We carry the one, but we carry it into the hundreds place.

Seven? Seven?

So you should have as an answer either a six digit or probably a seven digit number.

Would somebody get us started by giving us a two digit number, please?

Digits

And through the history, people always thought they knew it to about ten percent accuracy.

The star will refer back to the space, and we can have 0 or more of these.

Digits

Number of digits

4 Digits

By contrast, your place of birth is more likely to include letters rather than numbers.

Four Digit

Two Digit

Where is he, would you stand up, 10 digit guy?

And then we subtract 100 81.

So everything we've done so far are a bunch of digits times a one digit number.

AB Yes? Good.

So we call this place, the rightmost place we call that the ones place.

I'm the subpoena server. Can I see your ID?

One digit at a time, I shall try and determine the digit you've left out.

I actually end up with 10.24 it's ten exactly, but you know, this is close enough and the 35 decimal places won't affect your result that much.

This was the ones place, the tens place, now we're in the hundreds place.

YYYY The year, using 4 digits.

YY The year, using 2 digits.

Two Digit Apostrophe

This is the ones place.

I mean there's a two right there.

Minimum number of digits

Number of Digits

So now I notice, if you include this digit right over here,

Hands to braces!

pi to six digits.

Well, if you think about it, there's a pretty natural way to break a number with a bunch of digits into a couple numbers with fewer digits.

So as I wrote it right over here, 2.0929 is not a single digit number.

In the last video,

Because we can have 2 significant digits.

And they don't tell us to round or approximate because, obviously, if they said to round that final sixth decimal place, then you would round it up from 6 to 7, because the next digit is a 7.

So we're gonna investigate that in more detail on this next slide.

If I had 357, you could view this as three 100 bills, five 10 bills, and seven 1 bills, and that's why this is called the 100s, that's the 100s place, this is the tens place, and this is the ones place.

Let's do a simple example to see all of this in action.

Decimal places