Question

Express 1.21 as a fraction.

Answer 1

To express 1.21 as a fraction, you can start by recognizing that 1.21 can be separated into its whole number and decimal parts:

1.21 = 1 + 0.21

Next, convert the decimal part (0.21) to a fraction.

0.21 can be written as:

\[
0.21 = \frac{21}{100}
\]

Now, combine the whole number part and the fractional part:

\[
1.21 = 1 + 0.21 = 1 + \frac{21}{100}
\]

To combine these into a single fraction, convert the whole number 1 into a fraction:

\[
1 = \frac{100}{100}
\]

Now add the two fractions:

\[
1.21 = \frac{100}{100} + \frac{21}{100} = \frac{100 + 21}{100} = \frac{121}{100}
\]

Thus, the fraction representation of 1.21 is:

\[
\frac{121}{100}
\]

This fraction is already in its simplest form. Therefore, the final answer is:

\[
\frac{121}{100}
\]