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The denominator is the place value of the last number. For example, 0.3 = 3/10 because the 3 is in the tenths place. In another example, 0.79 = 79/100 because the 9 is in the hundredths place. In another example, 0.457 = 457/1000 because the 7 is in the thousandths place.

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Q: When you are converting a decimal to a fraction how do you know what to use as the denominator?
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Related questions

When you are converting a fraction to a decimal how do you know which number is the dividend and which number is the divisor?

The dividend is the numerator and the divisor is the denominator. Basically, you divide the top number (numerator) by the bottom number (denominator).


What if you multiply a whole number by a fraction?

cast back to maths and you know that 0.5 is a half, 0.25 is a quarter, you only need to remember converting a decimal to a fraction and you know what to do.


How do you convert a fraction into a decimal fraction using calculator?

If I understand this right, you want to know how to convert a fraction into a decimal with the aid of a calculator. This is usually done by pressing the fraction button on your calculator which changes it from a fraction to a decimal and vice versa.


How can the word form of a fraction help you write the fraction as a decimal?

In general, the word form of a fraction tells you what you can divide to generate the equivalent fraction. For instance, three fourths can be converted to a decimal by completing the problem "three divided by four." If the denominator is a multiple of ten, the word form of a fraction can tell you how many places are to the right of a decimal, as in the case 37/100 = "thirty-seven hundredths" = 0.37. Since the denominator is hundredths, you know that the decimal has two places to its right.


When you convert one unit to another how do you know which unit to place in the denominator?

You place the unit which you are converting from in the denominator.


How do you find the denominator of a fraction if you know the numerator and the value?

Denominator = Numerator/Value


How do you know if a fraction is a unit fraction?

It has "1" for the numerator.


What is a least common decimal?

I do not know of 'least common decimal', but i do know of 'least common denominator'


How do you know which unit of a conversion factor must be the denominator?

It is the units for the measurement which you are converting FROM.


How do you convert an improper fraction to a mixed numeral?

I will show the process by converting 1½ to a decimal and then reverse the process. First, you must multiply the denominator of the fraction by thewhole number. (in this case 2 X 1.) You will then add the numerator of the fraction to your current number.(2 X 1 + 1 = 3) Then place the number that you currently have(3)on top of the original denominator.(2) Your answer will be numerator:3 Denominator:2- an improper fraction. If you have an improper fraction like three halves, the fraction can be simplified to a mixed number. To do the conversion, divide three by two or ask your self how many times 3 goes into 2.(Did you know that a fraction is simply another way of showing division?) If three is correctly divided by two the answer will be 1½.


How do you know if a decimal is terminating or repeating?

If you know what rational fraction it represents then, if the denominator in the fraction's simplest form has any prime factor other than 2 and 5, then it is a repeating decimal and if not it is terminating.Otherwise you need to examine the digits of the decimal representation in detail. Remember though, that the repeating string could be thousands of digits long (or even longer).


How do you know a fraction will be a repeating decimal?

Reduce the fraction. By my experience most will be repeating if the denominator is not 2,4,5,8, or 10 or.... MULTIPLE OF 10 and these same ones ..... like 20,40 etc., or a multiple of 100 and these same ones, etc