Question

The standard form of $21600000$ is

• A. $2.16\times {10}^7$
• B. $216\times {10}^5$
• C. $0.216\times {10}^8$
• D. $21.6\times {10}^6$

Answer 1

Answer: (A)

$2.16\times {10}^7$

Any number can be expressed as a decimal number between 1.0 and 10.0 including 1.0 multiplied by a power of 10. Such a form of a number is called its standard form.

We are asked to write $21600000$ in its standard form.

$21600000=2.16\times 10000000$

Therefore, the standard form $21600000$ is written as $2.16\times {10}^7$.