Scientific Notation and Applications

What is 7.8 x 10^4 in standard notation?

• 7,800

• 78,000

• 780,000

• 7,800,000

What is 4.1 x 10^-3 in standard notation?

• 4.100

• 0.041

• 0.0041

• 0.41

What is 240,000 in scientific notation?

• 2.4 x 10^5

• 0.24 x 10^5

• 0.24 x 10^4

• 2.4 x 10^4

What is 0.059 in scientific notation?

• 5.9 x 10^-3

• 59 x 10^-3

• 59 x 10^-2

• 5.9 x 10^-2

An elephant weighs 1.3 × 10^4 pounds and a giraffe weighs 3.6 × 10^3 pounds. Approximately how many times heavier is the elephant than the giraffe?

• 2.3

• 3.6

• 3.9

• 4.2

Shaq scored 2.8 × 10^4 points and Kobe scored 3.3 × 10^4 points. What is the difference in their total points?

• 5.0 × 10^3

• 5.5 × 10^3

• 5.0 × 10^4

• 5.5 × 10^4

A solar panel consists of 6.2 × 10^4 layers of silicon. Each layer is 1.1 × 10^-3 millimeters thick. What is the total thickness of all the layers combined?

• 6.82 millimeters

• 68.2 millimeters

• 682 millimeters

• 6.82 × 10^2 millimeters

The mass of a dust particle is 7.5 × 10^-10 kg. If there are 2.0 × 10^6 such dust particles, what is their total mass?

• 1.5 × 10^-3 kg

• 1.5 × 10^-4 kg

• 1.5 × 10^-5 kg

• 1.5 × 10^-6 kg

A light-year is approximately 9.46 × 10^12 kilometers. If a star is 4.73 × 10^13 kilometers away, how many light-years is it from Earth?

• 0.5 light-years

• 5 light-years

• 50 light-years

• 500 light-years

The population of City A is 3.5 × 10^5 and the population of City B is 8.0 × 10^4. What is the combined population of both cities?

• 4.3 × 10^4

• 1.15 × 10^5

• 4.3 × 10^5

• 1.15 × 10^4