2. Write the number as an improper fraction.
- 15.8333333338 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:
15.8333333338 = 15.8333333338/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 10,000,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
15.8333333338/1 =
(15.8333333338 × 10,000,000,000)/(1 × 10,000,000,000) =
158,333,333,338/10,000,000,000
3. Reduce (simplify) the fraction above:
158,333,333,338/10,000,000,000
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).
158,333,333,338 = 2 × 41 × 1,930,894,309
10,000,000,000 = 210 × 510
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (2 × 41 × 1,930,894,309; 210 × 510) = 2
Divide both the numerator and the denominator by their GCF.
158,333,333,338/10,000,000,000 =
(2 × 41 × 1,930,894,309)/(210 × 510) =
((2 × 41 × 1,930,894,309) ÷ 2) / ((210 × 510) ÷ 2) =
(41 × 1,930,894,309)/(29 × 510) =
79,166,666,669/5,000,000,000
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.
79,166,666,669 ÷ 5,000,000,000 = 15, remainder = 4,166,666,669 ⇒
79,166,666,669 = 15 × 5,000,000,000 + 4,166,666,669 ⇒
79,166,666,669/5,000,000,000 =
(15 × 5,000,000,000 + 4,166,666,669) / 5,000,000,000 =
(15 × 5,000,000,000) / 5,000,000,000 + 4,166,666,669/5,000,000,000 =
15 + 4,166,666,669/5,000,000,000 =
15 4,166,666,669/5,000,000,000