2. Write the number as an improper fraction.
- 4.6112 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:
4.6112 = 4.6112/1
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.
4.6112/1 =
(4.6112 × 10,000)/(1 × 10,000) =
46,112/10,000
3. Reduce (simplify) the fraction above:
46,112/10,000
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).
46,112 = 25 × 11 × 131
10,000 = 24 × 54
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (25 × 11 × 131; 24 × 54) = 24
Divide both the numerator and the denominator by their GCF.
46,112/10,000 =
(25 × 11 × 131)/(24 × 54) =
((25 × 11 × 131) ÷ 24) / ((24 × 54) ÷ 24) =
(2 × 11 × 131)/54 =
2,882/625
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.
2,882 ÷ 625 = 4, remainder = 382 ⇒
2,882 = 4 × 625 + 382 ⇒
2,882/625 =
(4 × 625 + 382) / 625 =
(4 × 625) / 625 + 382/625 =
4 + 382/625 =
4 382/625