In practice, calculations done in scientific notation are done by calculator. More advanced calculators can handle the scientific notation on its own, but others can’t. We are going to practice calculations as if the calculators cannot handle scientific notation. The reason for this is to emphasize the logic of scientific notation.
The process of performing the calculation is the same as in the previous problems, except that instead of using mental arithmetic to calculate things like \(40 + 8\) and \(3 \cdot 5\text{,}\) you would use the calculator to calculate things like \(31.57 + 1.79\) and \((2.83) \cdot (8.9)\text{.}\)
1.
Calculate \((2.8619 \times 10^6) + (3.18 \times 10^4)\) using a calculator. Give your final answer in scientific notation.
2.
Calculate \((1.86 \times 10^6) \cdot (4.03 \times 10^{-3})\) using a calculator. Give your final answer in scientific notation.
3.
Calculate \(\frac{8.136 \times 10^{-5}}{2.9 \times 10^{4}}\) using a calculator. Give your final answer in scientific notation.