2. Write the number as an improper fraction.
- 15.833333334 can be written as an improper fraction.
- An improper fraction = the numerator is larger than or equal to the denominator..
Write down the number divided by 1, as a fraction:
15.833333334 = 15.833333334/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 1,000,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
15.833333334/1 =
(15.833333334 × 1,000,000,000)/(1 × 1,000,000,000) =
15,833,333,334/1,000,000,000
3. Reduce (simplify) the fraction above:
15,833,333,334/1,000,000,000
to the lowest terms, to its simplest equivalent form, irreducible.
To reduce a fraction to the lowest terms divide the numerator and denominator by their greatest (highest) common factor (divisor), GCF.
Factor the numerator and denominator (prime factorization).
15,833,333,334 = 2 × 3 × 7 × 13 × 173 × 167,623
1,000,000,000 = 29 × 59
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (2 × 3 × 7 × 13 × 173 × 167,623; 29 × 59) = 2
Divide both the numerator and the denominator by their GCF.
15,833,333,334/1,000,000,000 =
(2 × 3 × 7 × 13 × 173 × 167,623)/(29 × 59) =
((2 × 3 × 7 × 13 × 173 × 167,623) ÷ 2) / ((29 × 59) ÷ 2) =
(3 × 7 × 13 × 173 × 167,623)/(28 × 59) =
7,916,666,667/500,000,000
4. The fraction is an improper one, rewrite it as a mixed number (mixed fraction):
- A mixed number = an integer number and a proper fraction, of the same sign.
- Example 1: 2 1/5; Example 2: - 1 3/7.
- A proper fraction = the numerator is smaller than the denominator.
7,916,666,667 ÷ 500,000,000 = 15, remainder = 416,666,667 ⇒
7,916,666,667 = 15 × 500,000,000 + 416,666,667 ⇒
7,916,666,667/500,000,000 =
(15 × 500,000,000 + 416,666,667) / 500,000,000 =
(15 × 500,000,000) / 500,000,000 + 416,666,667/500,000,000 =
15 + 416,666,667/500,000,000 =
15 416,666,667/500,000,000