What is 2.101666... as a Fraction?

2.1016 equals 1261600 as a fraction.

How do you turn 2.1016 repeating into a fraction?

Detailed Answer:

Step 1: To convert 2.1016 repeating into a fraction, begin writing this simple equation:

n = 2.1016 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (6) and 3 digits in the non-repeating part (101). Multiply both sides by 10⁴ = 10000.

10000 × n = 21016.6 (equation 2)

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

10000 × n = 21016.6
 1000 × n = 2.1016
 9000 × n = 18915

189159000 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 15 (the GCF - greatest common factor).

n = 189159000 = 18915 ÷ 159000 ÷ 15 = 1261600. So,

2.1016 = 1261600 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 1261600 is also equal to 261600 when expressed as a mixed number.

The repeating decimal 2.1016 (vinculum notation) has a repeated block length of 1. It is also represented as 2.101666... (ellipsis notation) which equals approximately 2.10166666 (decimal approximation)(*).

The recurring decimal 2.1016 can be written as a ratio of two integers having 1261 as the numerator and 600 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.