when-adding-34-x-105-and-21-x-104-what-is-the-first-step

Question

When adding 3.4 × $$10^{5}$$ and 2.1 × $$10^{4}$$, what is the first step?

Accepted Answer

Adjust the exponent of 2.1 × $$10^{4} to $$match $$10^{5}.$$

Answer

Subtract the exponents.

Answer

Add the coefficients directly.

Answer

Multiply the coefficients.

When adding 3.4 × 105 and 2.1 × 104, what is the first step?