Dividing and Multiplying Scientific Notation Word Problems

During the school year, each student planted 2 x 10² trees as part of a community service project. If there are 3.5 x 10³ students in the school, how many trees did they plant in total?

• 7 x 10⁵

• 0.7 x 10⁵

• 70 x 10⁵

• 7 x 10⁶

A factory can make 3 x 10⁴ t-shirts per day, how many t-shirts will it make in 2.5 x 10² days?

• 7.5 x 10⁶

• 6.5 x 10⁶

• 7.5 x 10⁸

• 7.5 x 10²

The US spends on average 10,200 dollars on each student per year. There are about 77,000,000 students in the United States. About how much money total is spent on students each year? (Put both numbers in scientific notation first!)

• 86.24 x 10¹¹

• 7.854 x 10²⁸

• 8.624 x 10¹¹

• 7.854 x 10¹¹

A blue whale can eat 3 x 10⁸ krill in a day. All of that krill weighs approximately 6.3 x 10⁹ pounds. About how much does each krill weigh? Give your answer in standard form.

• 210 pounds

• 0.21 pounds

• 2.1 pounds

• 21 pounds

• 3.6 x 10²

• 3.6 x 10⁸

• 4.6 x 10⁸

• 4.6 x 10²

(9 x 10⁶) \ (3 x 10²⁾

• 27 x 10⁴

• 2.7 x 10⁵

• 3 x 10¹²

• 3 x 10⁴

Solve:
\frac{6\times10^6}{2\times10^3}

• 12 x 10³

• 3 x 10⁹

• 1.2 x 10⁴

• 3 x 10³

In the year 2000, the United States public debt was about 5.6 x 10¹² dollars. The population of the United States in that year was about 2.8 x 10⁸ people. What was the average debt per person?

• Multiply

• Divide

(8.4 * 10⁶)/(2.1 * 10³)

• 0.4 * 10⁴

• 400 * 10^-3

• 4 * 10³

• 4 * 10²

(5 x 10⁶)(5 x 10⁷)

• 2.5 x 10¹²

• 2.5 x 10¹⁴

• 25 x 10¹²

• 25 x 10¹³