b. \frac{17 \times 10^{1}}{0.3 \times 10^{-4}} =
c. \frac{0.55 \times 10^{9}}{3 \times 10^{-6}} =
d. \frac{17 \times 10^{3}}{0.3 \times 10^{-3}} =
e. \frac{17 \times 10^{-5}}{9.2 \times 10^{-4}} =
f. 1.2 \times 10^{12} \times 79.1 \times 10^{2} =
g. 2 \times 10^{3} \times 9.7 \times 10^{2} =
h. 91.3 \times 10^{9} \times 8.1 \times 10^{4} =
i. 2.1 \times 10^{3} + 9.1 \times 10^{3} =
j. 2.9 \times 10^{-2} - 1.3 \times 10^{-6} =