2. Write the number as an improper fraction.
- 35.72 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:
35.72 = 35.72/1
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.
35.72/1 =
(35.72 × 100)/(1 × 100) =
3,572/100
3. Reduce (simplify) the fraction above:
3,572/100
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).
3,572 = 22 × 19 × 47
100 = 22 × 52
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (22 × 19 × 47; 22 × 52) = 22
Divide both the numerator and the denominator by their GCF.
3,572/100 =
(22 × 19 × 47)/(22 × 52) =
((22 × 19 × 47) ÷ 22) / ((22 × 52) ÷ 22) =
(19 × 47)/52 =
893/25