How do you change a decimal to a mixed number?

Question

Im doing homework but i forgot help me please.

Answer 1

The previous responders have given you the answer for a terminating decimal. (That means a decimal that has a certain number of decimal places, and then all the rest of it is zeroes. For example, .9187 is a terminating decimal, which could be extended with zeroes as .918700000000000000000....)

But you may be asking about repeating decimals. These are more interesting. Here's how you convert them to fractions.

If there is only a single digit that repeats (such as .3333333333....), you take that digit and put it over 9:
.3333333333.... = 3/9 = 1/3. (Note that you should put the fraction in lowest terms (1/3, in this case) after you put the digit over 9.)

If there are 2 digits that repeat, you put them over 99. For example, .636363636363636363.... = 63/99 = 7/11.

And if there are lots of digits that repeat, you put them over the same number of 9's. For example, .71237123712371237123.... = 7123/9999.

There are other tricks, such as a decimal that doesn't repeat until after the first few decimal places (e.g., .7633333...), but the above rules should handle most of the situations you encounter.

Answer 2

Depending on the number of places it has, put it over 10 for one decimal place, or over 100 if it has 2, or over 1000 if it has 3, etc.

Answer 3

.9 =9/10


.91 = 91/100

.919 = .919/1,000