2. Write the number as an improper fraction.
- 195.6875 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:
195.6875 = 195.6875/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 10,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
195.6875/1 =
(195.6875 × 10,000)/(1 × 10,000) =
1,956,875/10,000
3. Reduce (simplify) the fraction above:
1,956,875/10,000
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).
1,956,875 = 54 × 31 × 101
10,000 = 24 × 54
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (54 × 31 × 101; 24 × 54) = 54
Divide both the numerator and the denominator by their GCF.
1,956,875/10,000 =
(54 × 31 × 101)/(24 × 54) =
((54 × 31 × 101) ÷ 54) / ((24 × 54) ÷ 54) =
(31 × 101)/24 =
3,131/16
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.
3,131 ÷ 16 = 195, remainder = 11 ⇒
3,131 = 195 × 16 + 11 ⇒
3,131/16 =
(195 × 16 + 11) / 16 =
(195 × 16) / 16 + 11/16 =
195 + 11/16 =
195 11/16