Question

Write the short form of the following as a decimal number.

$20+3+0.04+0.004+0.0009$

Answer 1

We have,

$20+3+0.04+0.004+0.0009=\left(2\times 10\right)+\left(3\times 1\right)+\left(4\times \frac{1}{100}\right)+\left(4\times \frac{1}{1000}\right)+\left(9\times \frac{1}{10000}\right)$

Here, the place value of$2=20$, the place value of$3=3$, the place value of$4=\frac{4}{100}$, the place value of$4=\frac{4}{1000}$, and the place value of$9=\frac{9}{10000}$

So, In decimal form, $2$is at tens place, $3$is at ones,$4$ is at hundredths, $4$is at thousandths place, and$9$ is at the ten-thousandths place.

Hence, the decimal form is $23.0449$