1
00:00:00,479 --> 00:00:05,515
Let's write 0.8 as a fraction.

2
00:00:05,515 --> 00:00:10,206
So 0.8, the 8 right over here is in the tenths place.

3
00:00:10,206 --> 00:00:11,348
It is in the tenths place.

4
00:00:11,348 --> 00:00:14,337
So you can read this as 8 tenths (or 8/10).

5
00:00:14,337 --> 00:00:16,048
And we can write that, literally,

6
00:00:16,048 --> 00:00:21,329
as being equal to 8 tenths, or 8 over 10 (or 8/10).

7
00:00:21,329 --> 00:00:23,011
And now, we've already written it as a fraction.

8
00:00:23,011 --> 00:00:25,273
And if we want, we can simplify this down.

9
00:00:25,273 --> 00:00:27,820
Both 8 and 10 share common factors.

10
00:00:27,820 --> 00:00:29,940
They are both divisible by 2.

11
00:00:29,940 --> 00:00:30,965
So let's divide both the numerator

12
00:00:30,965 --> 00:00:33,960
and the denominator by 2.

13
00:00:33,960 --> 00:00:35,465
We're not changing the value of the fraction,

14
00:00:35,465 --> 00:00:37,182
because we are dividing both the numerator

15
00:00:37,182 --> 00:00:39,068
and the denominator by the same thing.

16
00:00:39,068 --> 00:00:41,448
8 ÷ 2 is 4.

17
00:00:41,448 --> 00:00:43,783
10 ÷ 2 is 5.

18
00:00:43,783 --> 00:00:45,866
And we're done.

19
00:00:45,866 --> 00:00:52,167
0.8 is the same thing as 8 tenths (or 8/10), which is the same thing as 4 fifths (or 4/5).