2.1 as a Fraction

2.1 as a fraction is 21/10, or 2 1/10 as a mixed number.

Result

Answer

2.1 = \textcolor{#0b5c56}{\frac{21}{10} = 2\frac{1}{10}}

2.1 as a fraction is 21/10, or 2 1/10 as a mixed number.

  • Mixed number: \displaystyle 2\frac{1}{10}
  • Percent: 210%
232 1/10

Step-by-step solution

The problem

2.1

  1. Write the digits over 10. 2.1 has 1 decimal place, so put the digits (without the point) over 1 followed by 1 zero.

    = \textcolor{#0b5c56}{\frac{21}{10}}

  2. Check that it can't be simplified. 21 and 10 have no common factor other than 1.

  3. Write it as a mixed number. 21 ÷ 10 = 2 remainder 1: the whole number is 2 and 1 is the new numerator.

    21 \div 10 = 2\ \text{R}\ 1
    = \textcolor{#0b5c56}{2\frac{1}{10}}

All the working together

\begin{aligned} &2.1 \\[8pt] &= \frac{21}{10} && \textcolor{#5b6660}{\textsf{over 10}} \\[8pt] &= \textcolor{#0b5c56}{2\frac{1}{10}} && \textcolor{#5b6660}{\textsf{mixed number}}\end{aligned}

2.1 in other forms

Fraction (simplest form)21/10
Mixed number2 1/10
Percent210%
The other way21/10 as a decimal

Nearby decimals as fractions

DecimalFractionPercent
1.89/5180%
1.8537/20185%
1.919/10190%
1.9539/20195%
2.0541/20205%
2.121/10210%
2.1543/20215%
2.211/5220%
2.259/4225%
2.323/10230%
2.3547/20235%

Frequently asked questions

What is 2.1 as a fraction?

2.1 as a fraction is 21/10, or 2 1/10 as a mixed number. 2.1 has 1 decimal place, so write the digits over 10: 21/10. It cannot be simplified.

What is 2.1 as a percent?

2.1 is 210%: multiply by 100 (move the decimal point two places to the right).

Is 21/10 the simplest form?

Yes. 21 and 10 have no common factor other than 1.

More decimals as fractions

Any other decimal, including longer repeating ones: use the Decimal to Fraction Calculator, or look it up on the printable fraction chart.