How can we express 0.9 as a fraction?

To express 0.9 as a fraction, we start by recognizing that it is indeed a decimal that can be converted. Here’s how you can do it step-by-step:

1. Write 0.9 as a fraction: 0.9 can be written as 9/10. This is because the digit 9 is in the tenths place. So, we place 9 in the numerator (the top part of the fraction) and 10 in the denominator (the bottom part of the fraction).
2. To double-check, you can perform the division: 9 divided by 10 equals 0.9. Thus, our fraction is correct.
3. In simplest form, 9/10 cannot be simplified further since 9 and 10 don’t have any common factors except for 1.

Therefore, 0.9 as a fraction is 9/10.