Arithmetic (all content)
- Write fractions as decimals (denominators of 10 & 100)
- Writing a number as a fraction and decimal
- Write decimals and fractions shown on grids
- Rewriting decimals as fractions: 0.15
- Rewriting decimals as fractions: 0.8
- Rewriting decimals as fractions: 0.36
- Write decimals as fractions
- Rewriting tricky fractions to decimals
Sal converts 0.36 to a fraction. Created by Sal Khan.
Let's see if we can write 0.36 as a fraction. There are several ways of doing it. The way I like to do it is to say, well, 0.36, this is the same thing as 36 hundredths. Or one way to think about it is this is in the hundredths place. This is in the tens place, or you could view this as 30 hundredths. You could view this as 3 tens, or 30 hundredths. So we could say that this is the same thing as 36 hundredths, or this is equal to 36/100. And we've already expressed it as a fraction, but now we could actually simplify it because both 36 and 100 have some common factors. They're both divisible by, well, looks like they're both divisible by 4. So if we could divide the numerator by 4 and the denominator by 4, we're doing the same thing to both. So we're not changing the value of the fraction. 36 divided by 4 is 9, and then 100 divided by 4 is 25. And now these two characters don't seem to share any other common factors. And so we've written it in simplified form, and we're done.