2. Write the number as an improper fraction.
- 8.5266668 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:
8.5266668 = 8.5266668/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 10,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
8.5266668/1 =
(8.5266668 × 10,000,000)/(1 × 10,000,000) =
85,266,668/10,000,000
3. Reduce (simplify) the fraction above:
85,266,668/10,000,000
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).
85,266,668 = 22 × 21,316,667
10,000,000 = 27 × 57
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (22 × 21,316,667; 27 × 57) = 22
Divide both the numerator and the denominator by their GCF.
85,266,668/10,000,000 =
(22 × 21,316,667)/(27 × 57) =
((22 × 21,316,667) ÷ 22) / ((27 × 57) ÷ 22) =
21,316,667/(25 × 57) =
21,316,667/2,500,000
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.
21,316,667 ÷ 2,500,000 = 8, remainder = 1,316,667 ⇒
21,316,667 = 8 × 2,500,000 + 1,316,667 ⇒
21,316,667/2,500,000 =
(8 × 2,500,000 + 1,316,667) / 2,500,000 =
(8 × 2,500,000) / 2,500,000 + 1,316,667/2,500,000 =
8 + 1,316,667/2,500,000 =
8 1,316,667/2,500,000