A decimal would be as dividing its fraction's numerator by its denominator.
For example: 1/2 = one divided by two = 0.5 and 1/4 = one divided by four: 0.25.
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Neither is greater than the other.
1/2 = 0.5
0.333.... = 1/3
It all depends on the context that is being used.
To convert a decimal to a fraction, we can write the decimal as a fraction with the decimal as the numerator and a power of 10 as the denominator. In this case, 3.9 can be written as 39/10. To simplify this fraction, we can divide both the numerator and denominator by their greatest common factor, which is 1. Therefore, 3.9 as an improper fraction is 39/10.
To convert a decimal to a fraction, you can write the decimal as a fraction over a power of 10. In this case, 11.39 can be written as 1139/100 because there are two decimal places. This fraction can be simplified by dividing both the numerator and denominator by their greatest common divisor, which in this case is 1. Therefore, 11.39 as a fraction is 1139/100.
0.4 as a fraction and decimal
A decimal number is one in which the place value of each digit is ten times the place value of the digit to its right. (... , thousands, hundreds, tens, units, tenths, hundredths, ... ) A decimal point is used to separate the units from the tenths. If a number in decimal form has non-zero digits after the decimal point then it is a decimal fraction. [There is one esoteric exception: if the decimal point is followed by an infinite string of 9s, then it is not a decimal fraction.] Thus 37.6 is a decimal fraction 0.6 is a decimal fraction 0.00000063 is a decimal fraction 37 is not a decimal fraction. 37.0 is not a decimal fraction. 37.999... recurring is no a decimal fraction [it is in fact = 38].
It is called a decimal fraction.