What is 11.88888... as a Fraction?

11.888 equals 1079 as a fraction.

How do you turn 11.888 repeating into a fraction?

Detailed Answer:

Step 1: To convert 11.888 repeating into a fraction, begin writing this simple equation:

n = 11.888 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (8) and 2 digits in the non-repeating part (88). Multiply both sides by 10³ = 1000.

1000 × n = 11888.8 (equation 2)

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

1000 × n = 11888.8
 100 × n = 11.888
 900 × n = 10700

10700900 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 100 (the GCF - greatest common factor).

n = 10700900 = 10700 ÷ 100900 ÷ 100 = 1079. So,

11.888 = 1079 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 1079 is also equal to 1189 when expressed as a mixed number.

The repeating decimal 11.888 (vinculum notation) has a repeated block length of 1. It is also represented as 11.88888... (ellipsis notation) which equals approximately 11.8888888 (decimal approximation)(*).

The recurring decimal 11.888 can be written as a ratio of two integers having 107 as the numerator and 9 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.