Here we will convert the number 3.99 to a fraction.
3.99 is the same as 3.99/1, because 3.99 divided by 1 is 3.99.
Therefore, we can multiply both the numerator and denominator in 3.99/1 by 100 to get rid of the decimal point and make it into a fraction as follows:
3.99/1 x 100/100 = 399/100
Then, we simplify the fraction if necessary and we have our answer:
3.99 = 3 99/100
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