2. Write the number as an improper fraction.
- 3.22222222228 can be written as an improper fraction.
- An improper fraction = the numerator is larger than or equal to the denominator..
Write down the number divided by 1, as a fraction:
3.22222222228 = 3.22222222228/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 100,000,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
3.22222222228/1 =
(3.22222222228 × 100,000,000,000)/(1 × 100,000,000,000) =
322,222,222,228/100,000,000,000
3. Reduce (simplify) the fraction above:
322,222,222,228/100,000,000,000
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).
322,222,222,228 = 22 × 232 × 3,559 × 42,787
100,000,000,000 = 211 × 511
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (22 × 232 × 3,559 × 42,787; 211 × 511) = 22
Divide both the numerator and the denominator by their GCF.
322,222,222,228/100,000,000,000 =
(22 × 232 × 3,559 × 42,787)/(211 × 511) =
((22 × 232 × 3,559 × 42,787) ÷ 22) / ((211 × 511) ÷ 22) =
(232 × 3,559 × 42,787)/(29 × 511) =
80,555,555,557/25,000,000,000
4. The fraction is an improper one, rewrite it as a mixed number (mixed fraction):
- A mixed number = an integer number and a proper fraction, of the same sign.
- Example 1: 2 1/5; Example 2: - 1 3/7.
- A proper fraction = the numerator is smaller than the denominator.
80,555,555,557 ÷ 25,000,000,000 = 3, remainder = 5,555,555,557 ⇒
80,555,555,557 = 3 × 25,000,000,000 + 5,555,555,557 ⇒
80,555,555,557/25,000,000,000 =
(3 × 25,000,000,000 + 5,555,555,557) / 25,000,000,000 =
(3 × 25,000,000,000) / 25,000,000,000 + 5,555,555,557/25,000,000,000 =
3 + 5,555,555,557/25,000,000,000 =
3 5,555,555,557/25,000,000,000