What is 1.616161616... as a Fraction?

1.616 equals 16099 as a fraction.

How do you turn 1.616 repeating into a fraction?

Detailed Answer:

Step 1: To convert 1.616 repeating into a fraction, begin writing this simple equation:

n = 1.616 (equation 1)

Step 2: Notice that there are 2 digits in the repeating block (16) and 1 digit in the non-repeating part (6). Multiply both sides by 10³ = 1000.

1000 × n = 1616.16 (equation 2)

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

1000 × n = 1616.16
  10 × n = 1.616
 990 × n = 1600

1600990 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 = 1600990 = 1600 ÷ 10990 ÷ 10 = 16099. So,

1.616 = 16099 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 16099 is also equal to 16199 when expressed as a mixed number.

The repeating decimal 1.616 (vinculum notation) has a repeated block length of 2. It is also represented as 1.6161616... (ellipsis notation) which equals approximately 1.61616161616 (decimal approximation)(*).

The recurring decimal 1.616 can be written as a ratio of two integers having 160 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.