2. Write the number as an improper fraction.
- 10.9668 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:
10.9668 = 10.9668/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 10,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
10.9668/1 =
(10.9668 × 10,000)/(1 × 10,000) =
109,668/10,000
3. Reduce (simplify) the fraction above:
109,668/10,000
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).
109,668 = 22 × 3 × 13 × 19 × 37
10,000 = 24 × 54
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (22 × 3 × 13 × 19 × 37; 24 × 54) = 22
Divide both the numerator and the denominator by their GCF.
109,668/10,000 =
(22 × 3 × 13 × 19 × 37)/(24 × 54) =
((22 × 3 × 13 × 19 × 37) ÷ 22) / ((24 × 54) ÷ 22) =
(3 × 13 × 19 × 37)/(22 × 54) =
27,417/2,500
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.
27,417 ÷ 2,500 = 10, remainder = 2,417 ⇒
27,417 = 10 × 2,500 + 2,417 ⇒
27,417/2,500 =
(10 × 2,500 + 2,417) / 2,500 =
(10 × 2,500) / 2,500 + 2,417/2,500 =
10 + 2,417/2,500 =
10 2,417/2,500