Question

Evaluate the expression. Write your answer in scientific notation.

$(2.4\times {10}^4)\times (3.8\times {10}^{-6})$

Answer 1

Step1. To solve the given expression , we should open bracket first,

$=2.4\times {10}^4\times 3.8\times {10}^{-6}$

Step2. Now rearranging them in a suitable manner we get,

$=2.4\times 3.8\times {10}^4\times {10}^{-6}$

Step3. Multiplying digits and power in the last, we get

$=9.12\times {10}^{4-6}$

$=9.12\times {10}^{-2}$

Hence, the expression is $9.12\times {10}^{-2}$ .