2. Write the number as a proper fraction.
- 0.5555555558 can be written as a proper fraction.
- A proper fraction = the numerator is smaller than the denominator..
Write down the number divided by 1, as a fraction:
0.5555555558 = 0.5555555558/1
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.
0.5555555558/1 =
(0.5555555558 × 10,000,000,000)/(1 × 10,000,000,000) =
5,555,555,558/10,000,000,000
3. Reduce (simplify) the fraction above:
5,555,555,558/10,000,000,000
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).
5,555,555,558 = 2 × 7 × 396,825,397
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 × 7 × 396,825,397; 210 × 510) = 2
Divide both the numerator and the denominator by their GCF.
5,555,555,558/10,000,000,000 =
(2 × 7 × 396,825,397)/(210 × 510) =
((2 × 7 × 396,825,397) ÷ 2) / ((210 × 510) ÷ 2) =
(7 × 396,825,397)/(29 × 510) =
2,777,777,779/5,000,000,000