Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
433,333,333,345/500,000,000,000
- The integer number above the bar is called numerator: 433,333,333,345
- The integer number below the bar is called denominator: 500,000,000,000
- 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 = 433,333,333,345 ÷ 500,000,000,000
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:
433,333,333,345 = 5 × 11 × 149 × 52,877,771
433,333,333,345 is a composite number.
Written with exponents:
500,000,000,000 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 = 211 × 512
500,000,000,000 is a composite number.
433,333,333,345/500,000,000,000 =
(433,333,333,345 ÷ 5) / (500,000,000,000 ÷ 5) =
86,666,666,669/100,000,000,000
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.
433,333,333,345/500,000,000,000 =
(5 × 11 × 149 × 52,877,771)/(211 × 512) =
((5 × 11 × 149 × 52,877,771) ÷ 5) / ((211 × 512) ÷ 5) =
(11 × 149 × 52,877,771)/(211 × 511) =
86,666,666,669/100,000,000,000
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
86,666,666,669/100,000,000,000 =
86,666,666,669 ÷ 100,000,000,000 =
0.86666666669 ≈
0.87