2. Write the number as an improper fraction.
- 6.668 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:
6.668 = 6.668/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 1,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
6.668/1 =
(6.668 × 1,000)/(1 × 1,000) =
6,668/1,000
3. Reduce (simplify) the fraction above:
6,668/1,000
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).
6,668 = 22 × 1,667
1,000 = 23 × 53
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (22 × 1,667; 23 × 53) = 22
Divide both the numerator and the denominator by their GCF.
6,668/1,000 =
(22 × 1,667)/(23 × 53) =
((22 × 1,667) ÷ 22) / ((23 × 53) ÷ 22) =
1,667/(2 × 53) =
1,667/250
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.
1,667 ÷ 250 = 6, remainder = 167 ⇒
1,667 = 6 × 250 + 167 ⇒
1,667/250 =
(6 × 250 + 167) / 250 =
(6 × 250) / 250 + 167/250 =
6 + 167/250 =
6 167/250