Using Standard Form

Question 1:

9.7 \times 10^{3} + 4 \times 10^{2}

1.01 \times 10^{4}

Question 2:

6.2 \times 10^{-6} - 2.7 \times 10^{-7}

5.93 \times 10^{-6}

Question 3:

2 \times 10^{4} \times 6.1 \times 10^{6}

1.22 \times 10^{11}

Question 4:

\frac{5.8 \times 10^{-5}}{5.1 \times 10^{4}}

1.14 \times 10^{-9}