2. Write the number as an improper fraction.
- 1.53335 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:
1.53335 = 1.53335/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 100,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
1.53335/1 =
(1.53335 × 100,000)/(1 × 100,000) =
153,335/100,000
3. Reduce (simplify) the fraction above:
153,335/100,000
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).
153,335 = 5 × 7 × 13 × 337
100,000 = 25 × 55
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (5 × 7 × 13 × 337; 25 × 55) = 5
Divide both the numerator and the denominator by their GCF.
153,335/100,000 =
(5 × 7 × 13 × 337)/(25 × 55) =
((5 × 7 × 13 × 337) ÷ 5) / ((25 × 55) ÷ 5) =
(7 × 13 × 337)/(25 × 54) =
30,667/20,000
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.
30,667 ÷ 20,000 = 1, remainder = 10,667 ⇒
30,667 = 1 × 20,000 + 10,667 ⇒
30,667/20,000 =
(1 × 20,000 + 10,667) / 20,000 =
(1 × 20,000) / 20,000 + 10,667/20,000 =
1 + 10,667/20,000 =
1 10,667/20,000