3.9 as a Fraction

Decimal to fraction results for: 3.9 in simple form.
Whole number-integral part: 3
Fractional-decimal part: 9


3.9 = 3 9/10
a/b = numerator/denominator = 9/10

Pie chart representation of the fractional part of decimal 3.9

.9 = 9/10

Level of Precision:
Use the level of precision to break 3.9 down further as a fraction.
For example 3.9 with a precision point of 2 equals:
3 90/100
= 3 9/10

select a precision:

3 90000/100000
= 3 9000/10000
= 3 900/1000
= 3 90/100
= 3 9/10

Keep in mind a mixed number is made up of a whole number (whole numbers have no fractional or decimal part) and a proper fraction part (a fraction where the numerator (the top number) is less than the denominator (the bottom number). In this case the whole number value is 3 and the proper fraction value is 9/10.

Enter a Decimal Value:



Is 3.9 a terminating, recurring or an irrational decimal?

Terminating decimals have a limited number of digits after the decimal point.

Example: 8298.94 = 8298 94/100

Recurring decimals have one or more repeating numbers after the decimal point which continue on infinitely.

Example: 2919.3333 = 2919 3333/10000 = 333/1000 = 33/100 = 1/3 (rounded)

Irrational decimals go on forever and never form a repeating pattern. This type of decimal cannot be expressed as a fraction.

Example: 0.912102217.....

Popular Conversions:
One Decimal Point to Fraction Conversions

Example: 6937.2 = 6937 2/10



Two Decimal Points to Fraction Conversions:

Example: 876.16 = 876 16/100



Three Decimal Points to Fraction Conversions:

Example: 1036.274 = 1036 274/1000



Four Decimal Points to Fraction Conversions:

Example: 6321.7402 = 6321 7402/10000


Popular Decimal to Fraction Conversions:


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