Using Standard Form

Question 1:

1.7 \times 10^{4} + 5.6 \times 10^{5}

5.77 \times 10^{5}

Question 2:

7.3 \times 10^{4} - 1.6 \times 10^{2}

7.284 \times 10^{4}

Question 3:

4.7 \times 10^{6} \times 7.3 \times 10^{3}

3.431 \times 10^{10}

Question 4:

\frac{7.1 \times 10^{6}}{4.9 \times 10^{4}}

1.45 \times 10^{2}