Scientific Notation Word Problems

Q. 

The mass of he sun is 1.989 x 10³⁰ kilograms. The mass of the earth is 5.98 x 10²⁴ kilograms. How many times bigger is the sun than the earth?

• 3.326 x 10^5

• 1.99 x 10^30

• 3.326 x 10^6

• 1.99 x 10^6

There are approximately 3.1 x 10^8 people in the United States. If each person has 4.1 x 10 ^1 coins, how many coins are there in the US?

• 1.271 x 10^9

• 1.271 x 10^11

• 1.272 x 10^10

• 1.271 x 10^8

By area, Russia is the largest country in the world. It has an area of 8.649 x 10^6 square miles. Canada is second with 4.797 x 10^6 square miles. What is the difference in area?

• 3.852 x 10^0 sq. mi

• 3.852 x 10^6 sq mi

• 1.803 x 10^6 sq. mi

• 1.803 x 10^1

In the year 2000, the US public debt was about 5.6 x 10 ^12 dollars. The population of the US in that year was about 2.8 x 10^8 people. What was the average debt per person?

• $2000

• $28000

• $20

• $20000

A factory can make 3 x 10^4 t-shirts per day, how many t-shirts will it make in 2.5 x 10^2 days?

• 7.5 x 10^6 shirts

• 75 x 10^5 shirts

• 7.5 x 10^4 shirts

• none of these