Multiplying and Dividing in Scientific Notation Word Problems

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

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

(2 x 10⁹)(4 x 10^-4)

• 8 x 10¹³

• 8 x 10³⁶

• 8 x 10⁵

• 8 x 10^-36

(9.6×10³) × (6.7×10²)

• 64.32×10⁵

• 6.432×10⁶

• 64.32×10⁶

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?

• 2 x 10^-4

• 0.5 x 10^-4

• 5 x 10^-5

• 2 x 10⁴

(6 x 10⁶) x (2 x 10³)

• 2 x 10¹⁰

• 8 x 10⁹

• 1.2 x 10⁸

• 8 x 10¹⁰

(9.6×10³) × (6.7×10²)

• 64.32×10⁵

• 6.432×10⁶

• 64.32×10⁶

• 64.32×10⁵

(8.4 * 10⁶)/(2.1 * 10³)

• 0.4 * 10⁴

• 400 * 10^-3

• 4 * 10³

• 4 * 10²

(5.3 x 10²) x (1.0 x 10²)

• 5.3 x 10⁴

• 5.3 x 10²

• 6.3 x 10²

• 53 x 10⁴

Multiply:
(-3 x 10⁵)(1 x 10^-2)

• 3 x 10³

• 3 x 10⁷

• -3 x 10³

• -3 x 10^-10