Mastering Scientific Notation: Addition & Conversion Quiz

A scientist measures the mass of a small particle as 3.5 x 10^-27 kg. Convert this mass to scientific notation and add it to another particle with a mass of 2.1 x 10^-27 kg. What is the total mass in scientific notation?

• 6.1 x 10^-27 kg

• 5.0 x 10^-27 kg

• 4.6 x 10^-27 kg

• 5.6 x 10^-27 kg

The distance from Earth to a nearby star is approximately 4.2 x 10^16 meters. If another star is 3.8 x 10^16 meters away, what is the total distance to both stars in scientific notation?

• 9.0 x 10^16 meters

• 8.5 x 10^16 meters

• 8.0 x 10^16 meters

• 7.5 x 10^16 meters

A bacterium has a length of 1.5 x 10^-7 meters. If you have 2.3 x 10^-7 meters of bacteria lined up, what is the total length in scientific notation?

• 1.5 x 10^-7 meters

• 4.6 x 10^-7 meters

• 2.3 x 10^-7 meters

• 2.0 x 10^-7 meters

A comet travels at a speed of 5.6 x 10^4 meters per second. If it travels for 3.2 x 10^3 seconds, how far does it travel in scientific notation?

• 2.1 x 10^7 meters

• 1.792 x 10^8 meters

• 1.0 x 10^9 meters

• 1.5 x 10^8 meters

The volume of a small water droplet is about 2.5 x 10^-6 liters. If you have 4 droplets, what is the total volume in scientific notation?

• 1.0 x 10^-5 liters

• 1.5 x 10^-5 liters

• 2.0 x 10^-5 liters

• 5.0 x 10^-6 liters

A galaxy is estimated to contain 1.2 x 10^11 stars. If another galaxy contains 3.4 x 10^10 stars, how many stars are there in total in scientific notation?

• 2.0 x 10^11

• 1.54 x 10^11

• 1.2 x 10^10

• 4.6 x 10^11

The height of a tree is measured to be 1.8 x 10^2 meters. If another tree is 2.5 x 10^2 meters tall, what is the combined height of both trees in scientific notation?

• 3.5 x 10^2 meters

• 4.3 x 10^2 meters

• 4.0 x 10^2 meters

• 5.0 x 10^2 meters

A computer processes data at a rate of 2.5 x 10^6 bytes per second. If it runs for 1.2 x 10^2 seconds, how much data is processed in scientific notation?

• 2.5 x 10^7 bytes

• 5.0 x 10^8 bytes

• 1.2 x 10^5 bytes

• 3.0 x 10^8 bytes

The speed of light is approximately 3.0 x 10^8 meters per second. If a light beam travels for 5.0 x 10^2 seconds, how far does it travel in scientific notation?

• 1.0 x 10^10 meters

• 1.5 x 10^11 meters

• 3.0 x 10^12 meters

• 2.5 x 10^11 meters

A small electronic device uses 4.5 x 10^-3 watts of power. If you have 3 devices, what is the total power consumption in scientific notation?

• 4.5 x 10^-3

• 1.5 x 10^-2

• 1.35 x 10^-2

• 3.0 x 10^-3