2. Write the number as an improper fraction.
- 25.875 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:
25.875 = 25.875/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 1,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
25.875/1 =
(25.875 × 1,000)/(1 × 1,000) =
25,875/1,000
3. Reduce (simplify) the fraction above:
25,875/1,000
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).
25,875 = 32 × 53 × 23
1,000 = 23 × 53
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (32 × 53 × 23; 23 × 53) = 53
Divide both the numerator and the denominator by their GCF.
25,875/1,000 =
(32 × 53 × 23)/(23 × 53) =
((32 × 53 × 23) ÷ 53) / ((23 × 53) ÷ 53) =
(32 × 23)/23 =
207/8