Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
1,010,101,002/3,999,999,978
- The integer number above the bar is called numerator: 1,010,101,002
- The integer number below the bar is called denominator: 3,999,999,978
- 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 = 1,010,101,002 ÷ 3,999,999,978
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:
1,010,101,002 = 2 × 3 × 17 × 9,902,951
1,010,101,002 is a composite number.
Written with exponents:
3,999,999,978 = 2 × 3 × 3 × 13 × 17,094,017 = 2 × 32 × 13 × 17,094,017
3,999,999,978 is a composite number.
1,010,101,002/3,999,999,978 =
(1,010,101,002 ÷ 6) / (3,999,999,978 ÷ 6) =
168,350,167/666,666,663
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.
1,010,101,002/3,999,999,978 =
(2 × 3 × 17 × 9,902,951)/(2 × 32 × 13 × 17,094,017) =
((2 × 3 × 17 × 9,902,951) ÷ (2 × 3)) / ((2 × 32 × 13 × 17,094,017) ÷ (2 × 3)) =
(17 × 9,902,951)/(3 × 13 × 17,094,017) =
168,350,167/666,666,663
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
168,350,167/666,666,663 =
168,350,167 ÷ 666,666,663 =
0.252525251889 ≈
0.25