WEBVTT
00:00:01.140 --> 00:00:05.300
Mason went running for two and one-fifth hours.
00:00:05.770 --> 00:00:08.960
Express this mixed number as a decimal.
00:00:11.600 --> 00:00:13.470
Mason really loves running.
00:00:15.350 --> 00:00:23.450
We need to take the time that he spent running, two and one-fifth hours, and turn it into a number with a decimal.
00:00:24.880 --> 00:00:26.770
The whole number part is easy.
00:00:28.700 --> 00:00:34.320
We take the first two hours and we write the two before the decimal point.
00:00:36.460 --> 00:00:42.190
Then we have to remember how to convert one-fifth into a decimal number.
00:00:44.730 --> 00:00:51.280
If you remember, the first place after the decimal point is the tenths place.
00:00:52.910 --> 00:00:59.900
So if we could figure out how many tenths of an hour Mason went running, we could put that here.
00:01:01.430 --> 00:01:06.590
To do that, we need to know how many tenths are equal to one-fifth.
00:01:08.430 --> 00:01:11.390
Five times two equals 10.
00:01:12.930 --> 00:01:21.980
And when we’re multiplying fractions to find equivalent fractions, we have to multiply the numerator and the denominator by the same thing.
00:01:22.500 --> 00:01:25.570
This means we need to multiply one by two.
00:01:27.250 --> 00:01:31.800
One-fifth is equal to two 10ths.
00:01:33.970 --> 00:01:37.400
And tenths go right behind the decimal place.
00:01:37.890 --> 00:01:43.450
Mason went running for two and two 10ths hours.
00:01:45.410 --> 00:01:49.130
Would you go running for two and two 10ths hours?