2. Write the number as an improper fraction.
- 83.36 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:
83.36 = 83.36/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 100.
- 1 followed by as many 0-s as the number of digits after the decimal point.
83.36/1 =
(83.36 × 100)/(1 × 100) =
8,336/100
3. Reduce (simplify) the fraction above:
8,336/100
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).
8,336 = 24 × 521
100 = 22 × 52
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (24 × 521; 22 × 52) = 22
Divide both the numerator and the denominator by their GCF.
8,336/100 =
(24 × 521)/(22 × 52) =
((24 × 521) ÷ 22) / ((22 × 52) ÷ 22) =
(22 × 521)/52 =
2,084/25
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.
2,084 ÷ 25 = 83, remainder = 9 ⇒
2,084 = 83 × 25 + 9 ⇒
2,084/25 =
(83 × 25 + 9) / 25 =
(83 × 25) / 25 + 9/25 =
83 + 9/25 =
83 9/25