2. Write the number as an improper fraction.
- 93.19 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:
93.19 = 93.19/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 100.
- 1 followed by as many 0-s as the number of digits after the decimal point.
93.19/1 =
(93.19 × 100)/(1 × 100) =
9,319/100
3. Reduce (simplify) the fraction above:
9,319/100
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).
9,319 is a prime number, it cannot be factored into other prime factors
100 = 22 × 52
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
But, the numerator and the denominator have no common factors.
GCF (9,319; 22 × 52) = 1
The numerator and the denominator are coprime numbers (no common prime factors, GCF = 1). So, the fraction cannot be reduced (simplified): irreducible fraction.
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.
9,319 ÷ 100 = 93, remainder = 19 ⇒
9,319 = 93 × 100 + 19 ⇒
9,319/100 =
(93 × 100 + 19) / 100 =
(93 × 100) / 100 + 19/100 =
93 + 19/100 =
93 19/100