What is 0.17171... as a Fraction?

0.171 equals 1799 as a fraction.

How do you turn 0.171 repeating into a fraction?

Detailed Answer:

Step 1: To convert 0.171 repeating into a fraction, begin writing this simple equation:

n = 0.171 (equation 1)

Step 2: Notice that there are 2 digits in the repeating block (71) and 1 digit in the non-repeating part (1). Multiply both sides by 10³ = 1000.

1000 × n = 171.71 (equation 2)

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

1000 × n = 171.71
  10 × n = 0.171
 990 × n = 170

170990 could be the answer, but it still can be put in the simplest form, i.e., reduced.

To simplify this fraction, divide the numerator and denominator by 10 (the GCF - greatest common factor).

n = 170990 = 170 ÷ 10990 ÷ 10 = 1799. So,

0.171 = 1799 as the lowest possible fraction.

The repeating decimal 0.171 (vinculum notation) has a repeated block length of 2. It is also represented as 0.1717171... (ellipsis notation) which equals approximately 0.17171717171 (decimal approximation)(*).

The recurring decimal 0.171 can be written as a ratio of two integers having 17 as the numerator and 99 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.