What is 12.90202... as a Fraction?

12.902 equals 12773990 as a fraction.

How do you turn 12.902 repeating into a fraction?

Detailed Answer:

Step 1: To convert 12.902 repeating into a fraction, begin writing this simple equation:

n = 12.902 (equation 1)

Step 2: Notice that there are 2 digits in the repeating block (02) and 1 digit in the non-repeating part (9). Multiply both sides by 10³ = 1000.

1000 × n = 12902.02 (equation 2)

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.

1000 × n = 12902.02
  10 × n = 12.902
 990 × n = 12773

n = 12773990 (answer)

12.902 = 12773990 as the lowest possible fraction.

As the numerator is greater than the denominator, we have an improper fraction, so we can also express it as a mixed number, thus 12773990 is also equal to 12893990 when expressed as a mixed number.

The repeating decimal 12.902 (vinculum notation) has a repeated block length of 2. It is also represented as 12.9020202... (ellipsis notation) which equals approximately 12.90202020202 (decimal approximation)(*).

The recurring decimal 12.902 can be written as a ratio of two integers having 12773 as the numerator and 990 as the denominator. So, it is a rational number (named after ratio). It can be shown that a number is rational if its decimal representation is repeating or terminating.

(*) At present, there is no single universally accepted notation or phrasing for repeating decimals.