# Use the rules for multiplication by powers of 10 to calculate 3 × 100.

Power and exponents are one of the most important concepts. They are very useful when it comes to calculations, and they can represent very large numbers in a compact form in the powers of 10.

## Answer: By the rules of multiplication by powers of 10, we get 3 × 100 as 300.

Let's understand the solution in detail.

**Explanation:**

By the rules of multiplication by powers of 10, 100 can be represented as 10^{2}.

Hence, we have to calculate 3 × 10^{2}.

Now, we know that any number to the power of 10^{n} will result in the original number with n zeroes after it.

Hence, we append 2 zeroes after 3 to get the result of the given multiplication questions.

Hence, 3 × 10^{2} = 300