Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
1,010,101,027/3,999,999,991
- The integer number above the bar is called numerator: 1,010,101,027
- The integer number below the bar is called denominator: 3,999,999,991
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 1,010,101,027 ÷ 3,999,999,991
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
1,010,101,027 = 13 × 77,700,079
1,010,101,027 is a composite number.
Written with exponents:
3,999,999,991 = 13 × 13 × 23,668,639 = 132 × 23,668,639
3,999,999,991 is a composite number.
1,010,101,027/3,999,999,991 =
(1,010,101,027 ÷ 13) / (3,999,999,991 ÷ 13) =
77,700,079/307,692,307
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
1,010,101,027/3,999,999,991 =
(13 × 77,700,079)/(132 × 23,668,639) =
((13 × 77,700,079) ÷ 13) / ((132 × 23,668,639) ÷ 13) =
77,700,079/(13 × 23,668,639) =
77,700,079/307,692,307
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
77,700,079/307,692,307 =
77,700,079 ÷ 307,692,307 =
0.252525257318 ≈
0.25