2. Write the number as an improper fraction.
- 333.8 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:
333.8 = 333.8/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 10.
- 1 followed by as many 0-s as the number of digits after the decimal point.
333.8/1 =
(333.8 × 10)/(1 × 10) =
3,338/10
3. Reduce (simplify) the fraction above:
3,338/10
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).
3,338 = 2 × 1,669
10 = 2 × 5
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (2 × 1,669; 2 × 5) = 2
Divide both the numerator and the denominator by their GCF.
3,338/10 =
(2 × 1,669)/(2 × 5) =
((2 × 1,669) ÷ 2) / ((2 × 5) ÷ 2) =
1,669/5 =
1,669/5
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.
1,669 ÷ 5 = 333, remainder = 4 ⇒
1,669 = 333 × 5 + 4 ⇒
1,669/5 =
(333 × 5 + 4) / 5 =
(333 × 5) / 5 + 4/5 =
333 + 4/5 =
333 4/5