1. Write the pure repeating (recurring) decimal number as a percentage.
Approximate to the desired number of decimal places (14).
Multiply the number by 100/100.
- The value of the number does not change when multiplying by 100/100.
- Note: 100/100 = 1
41.44444444444444 =
41.44444444444444 × 100/100 =
(41.44444444444444 × 100)/100 =
4,144.444444444444/100 =
4,144.444444444444% ≈
4,144.44%
(rounded off to max. 2 decimal places)
- In other words:
- Approximate to the desired number of decimal places...
- Multiply the number by 100...
- ... And then add the percent sign, %
- 41.4 ≈ 4,144.44%
2. Write the pure repeating (recurring) decimal number as an improper fraction.
41.4 can be written as an improper fraction.
- The numerator is larger than or equal to the denominator.
Set up the first equation.
- Let y equal the decimal number:
y = 41.4
Set up the second equation.
- Number of decimal places repeating: 1
Multiply both sides of the first equation by 101 = 10
y = 41.4
10 × y = 10 × 41.4
10 × y = 414.4
Subtract the first equation from the second one.
- Having the same number of decimal places ...
- The repeating pattern drops off by subtracting the two equations.
10 × y - y = 414.4 - 41.4 ⇒
(10 - 1) × y = 414.4 - 41.4 ⇒
We now have a new equation:
9 × y = 373
Solve for y in the new equation.
9 × y = 373 ⇒
y = 373/9
Let the result written as a fraction.
Now we can write the number as a fraction.
According to our first equation:
y = 41.4
According to our calculations:
y = 373/9
⇒ 41.4 = 373/9
3. Reduce (simplify) the fraction above:
373/9
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).
373 is a prime number, it cannot be factored into other prime factors
9 = 32
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
But, the numerator and the denominator have no common factors.
GCF (373; 32) = 1
The numerator and the denominator are coprime numbers (no common prime factors, GCF = 1). So, the fraction cannot be reduced (simplified): irreducible fraction.