Alka Tuli and Rajesh Hassija Solutions for Chapter: Powers and Exponents, Exercise 3: Exercise

If $7,20,00,00,000$ can be expressed in scientific notation as $7.2\times {10}^a$, then find the value of $a$.

If $23,45,00,000=2.345\times {10}^a$, then $a$ is

If the scientific notation of $6,99,99,99,990$ is $6.99999999\times {10}^k$, then $k$ is

If the scientific notation of $\frac{76}{\mathrm{10,000}}$ is $7.6\times {10}^{-k}$, then $k$ is

Express the following in the expanded form.
$9.018\times {10}^5$

Express the following in the expanded form.
$3.14071\times {10}^5$

Express the following in the expanded form.
$8.9\times {10}^{-4}$

Express the following in the expanded form.
$4.57\times {10}^9$