2. Write the number as an improper fraction.
- 1.63636366 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:
1.63636366 = 1.63636366/1
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.
- 1 followed by as many 0-s as the number of digits after the decimal point.
1.63636366/1 =
(1.63636366 × 100,000,000)/(1 × 100,000,000) =
163,636,366/100,000,000
3. Reduce (simplify) the fraction above:
163,636,366/100,000,000
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).
163,636,366 = 2 × 233 × 351,151
100,000,000 = 28 × 58
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (2 × 233 × 351,151; 28 × 58) = 2
Divide both the numerator and the denominator by their GCF.
163,636,366/100,000,000 =
(2 × 233 × 351,151)/(28 × 58) =
((2 × 233 × 351,151) ÷ 2) / ((28 × 58) ÷ 2) =
(233 × 351,151)/(27 × 58) =
81,818,183/50,000,000
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.
81,818,183 ÷ 50,000,000 = 1, remainder = 31,818,183 ⇒
81,818,183 = 1 × 50,000,000 + 31,818,183 ⇒
81,818,183/50,000,000 =
(1 × 50,000,000 + 31,818,183) / 50,000,000 =
(1 × 50,000,000) / 50,000,000 + 31,818,183/50,000,000 =
1 + 31,818,183/50,000,000 =
1 31,818,183/50,000,000