How to convert 2.1 to a fraction?

2.1 = 21/10 Then simplify to 21/10.

2.1 terminating or repeating?

It is a terminating decimal. The simplest fraction is 21/10.

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2.1 =

2.1

(1 decimal place → denominator 10)

21/10

→ simplify ÷1

(already in simplest terms, gcd=1)

Step 1: 2.1 has 1 decimal place, so write it as 21/10.

Step 2: Already in simplest form (gcd=1): 21/10.

Property: In simplest terms, denominators with prime factors only 2 and/or 5 produce terminating decimals.

Why can 2.1 be converted to a fraction?: Decimals can be expressed as fractions by using place value and simplifying.
2.1 terminating or repeating?: It is terminating.
Can it be simplified further?: 21/10 is simplest.

Percentage & Ratio: 2.1 can be interpreted as 21/10 in practical scenarios like discounts and rates.

Statistics: A proportion of 2.1 often represents a 210% probability — for example, a 210% significance level (p-value) in experiments or surveys.

Finance: Rates expressed with 2.1 (e.g., 210%) appear in returns and fees.