Question

Evaluate the expression: 3.0x103 – 2.0x102

Answer 1

3.0×10³ - 0.20×10³ = 2.8×10³

Answer 2

The expression given to us is $3.0\times 10^3-2.0\times 10^2$. We know that $3.0\times 10^3=3000$ and $2.0\times 10^2=200$.

Therefore, the given expression can be written as:

$3.0\times 10^3-2.0\times 10^2=3000-200=2800$

Which again can be rewritten as: $2.8\times 10^3$

Thus, the evaluation of the given expression  $3.0\times 10^3-2.0\times 10^2$ gives us: 2800 or  $2.8\times 10^3$.