Mastering Scientific Notation & Exponent Properties

A scientist measures the mass of a small particle as 3.5 x 10^-27 kg. If she has 4.2 x 10^3 particles, what is the total mass of all the particles in kg?

• 2.8 x 10^-24 kg

• 1.47 x 10^-23 kg

• 1.05 x 10^-23 kg

• 5.6 x 10^-22 kg

A bacteria culture grows at a rate of 2.5 x 10^6 bacteria per hour. How many bacteria will there be after 3 hours?

• 5.0 x 10^6

• 10.0 x 10^6

• 2.5 x 10^6

• 7.5 x 10^6

The distance from Earth to a star is approximately 4.2 x 10^16 meters. If a spaceship travels at a speed of 1.5 x 10^8 meters per hour, how many hours will it take to reach the star?

• 2.8 x 10^8 hours

• 1.2 x 10^8 hours

• 3.5 x 10^7 hours

• 5.0 x 10^9 hours

A computer processes 1.2 x 10^9 calculations per second. How many calculations can it process in 5 minutes?

• 4.2 x 10^11

• 1.8 x 10^11

• 2.4 x 10^11

• 3.6 x 10^11

A certain chemical reaction produces 6.0 x 10^4 grams of product per hour. How much product is produced in 2.5 hours?

• 1.5 x 10^5 grams

• 4.0 x 10^4 grams

• 3.0 x 10^5 grams

• 1.2 x 10^5 grams

The volume of a small cube is 1.0 x 10^3 cm^3. If you have 5 such cubes, what is the total volume in cm^3?

• 10.0 x 10^3 cm^3

• 1.0 x 10^3 cm^3

• 4.0 x 10^3 cm^3

• 5.0 x 10^3 cm^3

A car can travel 8.0 x 10^2 kilometers on a full tank. If the car makes 3 trips, how far can it travel in total?

• 4800 kilometers

• 2400 kilometers

• 1600 kilometers

• 3200 kilometers

A researcher finds that a certain species of fish can reproduce at a rate of 1.5 x 10^2 fish per month. How many fish will there be after 6 months?

• 300 fish

• 900 fish

• 1200 fish

• 600 fish

The speed of light is approximately 3.0 x 10^8 meters per second. How far does light travel in 10 seconds?

• 1.5 x 10^9 meters

• 3.0 x 10^9 meters

• 6.0 x 10^8 meters

• 3.0 x 10^7 meters

A factory produces 2.0 x 10^5 toys each day. How many toys does it produce in a week?

• 1.0 x 10^6 toys

• 1.4 x 10^6 toys

• 2.8 x 10^6 toys

• 1.2 x 10^6 toys