Mastering Scientific Notation: Solve & Divide with Ease

A scientist measures the mass of a small particle as 3.5 x 10^-27 kg. If she has 7.0 x 10^-27 kg of these particles, how many particles does she have?

• 2

• 4

• 1

• 3

A bacteria culture grows to 1.2 x 10^6 cells. If the culture is divided into 4 equal parts, how many cells are in each part?

• 3.0 x 10^5

• 4.8 x 10^5

• 1.0 x 10^6

• 2.4 x 10^5

The distance from Earth to a nearby star is approximately 4.2 x 10^16 meters. If a spaceship travels at a speed of 2.1 x 10^12 meters per hour, how many hours will it take to reach the star?

• 20000 hours

• 50000 hours

• 30000 hours

• 15000 hours

A small computer chip can process 2.5 x 10^9 calculations per second. If it runs for 3.0 x 10^2 seconds, how many calculations does it perform in total?

• 5.0 x 10^11

• 1.0 x 10^12

• 2.5 x 10^10

• 7.5 x 10^11

A water reservoir holds 1.5 x 10^6 liters of water. If 3.0 x 10^5 liters are used, how much water remains in the reservoir?

• 1.0 x 10^6 liters

• 1.5 x 10^6 liters

• 2.0 x 10^6 liters

• 1.2 x 10^6 liters

A researcher finds that a certain chemical is present in the soil at a concentration of 5.0 x 10^-4 grams per kilogram. If the researcher analyzes 2.0 x 10^3 kilograms of soil, how much of the chemical is present in total?

• 2.0 grams

• 10 grams

• 1.0 grams

• 0.5 grams

A galaxy is estimated to contain 1.0 x 10^11 stars. If astronomers discover that 2.0 x 10^10 stars are in a specific region, how many stars are outside that region?

• 3.0 x 10^10

• 5.0 x 10^10

• 1.0 x 10^11

• 8.0 x 10^10

A smartphone has a storage capacity of 3.2 x 10^9 bytes. If a user has 1.6 x 10^9 bytes of data stored, how much storage is still available?

• 1.6 x 10^9 bytes

• 3.2 x 10^9 bytes

• 1.0 x 10^9 bytes

• 2.4 x 10^9 bytes

A factory produces 4.5 x 10^3 toys per day. If the factory operates for 2.0 x 10^2 days, how many toys does it produce in that time?

• 7.5 x 10^5

• 1.0 x 10^6

• 8.0 x 10^5

• 9.0 x 10^5

A comet travels at a speed of 5.0 x 10^4 meters per second. If it travels for 1.2 x 10^3 seconds, how far does it travel in total?

• 4.8 x 10^7 meters

• 7.2 x 10^7 meters

• 6.0 x 10^7 meters

• 5.0 x 10^6 meters