2. Write the number as an improper fraction.
- 9.666668 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:
9.666668 = 9.666668/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 1,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
9.666668/1 =
(9.666668 × 1,000,000)/(1 × 1,000,000) =
9,666,668/1,000,000
3. Reduce (simplify) the fraction above:
9,666,668/1,000,000
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).
9,666,668 = 22 × 11 × 19 × 31 × 373
1,000,000 = 26 × 56
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (22 × 11 × 19 × 31 × 373; 26 × 56) = 22
Divide both the numerator and the denominator by their GCF.
9,666,668/1,000,000 =
(22 × 11 × 19 × 31 × 373)/(26 × 56) =
((22 × 11 × 19 × 31 × 373) ÷ 22) / ((26 × 56) ÷ 22) =
(11 × 19 × 31 × 373)/(24 × 56) =
2,416,667/250,000
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.
2,416,667 ÷ 250,000 = 9, remainder = 166,667 ⇒
2,416,667 = 9 × 250,000 + 166,667 ⇒
2,416,667/250,000 =
(9 × 250,000 + 166,667) / 250,000 =
(9 × 250,000) / 250,000 + 166,667/250,000 =
9 + 166,667/250,000 =
9 166,667/250,000