Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
3,249,242,427/7,500,000,000
- The integer number above the bar is called numerator: 3,249,242,427
- The integer number below the bar is called denominator: 7,500,000,000
- 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 = 3,249,242,427 ÷ 7,500,000,000
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:
3,249,242,427 = 3 × 12,983 × 83,423
3,249,242,427 is a composite number.
Written with exponents:
7,500,000,000 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 = 28 × 3 × 510
7,500,000,000 is a composite number.
3,249,242,427/7,500,000,000 =
(3,249,242,427 ÷ 3) / (7,500,000,000 ÷ 3) =
1,083,080,809/2,500,000,000
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.
3,249,242,427/7,500,000,000 =
(3 × 12,983 × 83,423)/(28 × 3 × 510) =
((3 × 12,983 × 83,423) ÷ 3) / ((28 × 3 × 510) ÷ 3) =
(12,983 × 83,423)/(28 × 510) =
1,083,080,809/2,500,000,000
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
1,083,080,809/2,500,000,000 =
1,083,080,809 ÷ 2,500,000,000 =
0.4332323236 ≈
0.43