Estimating Division in Scientific Notation: Grade 6 Quiz

A scientist measures the mass of a small asteroid as 3.2 x 10^6 kg. If she divides this mass by 4 x 10^2, what is the estimated mass of the asteroid in kg?

• 8000 kg

• 3200 kg

• 16000 kg

• 4000 kg

A factory produces 1.5 x 10^8 widgets in a year. If the factory operates for 3 x 10^3 hours in a year, how many widgets does it produce per hour? Estimate your answer.

• 4 x 10^4

• 3 x 10^4

• 5 x 10^4

• 6 x 10^4

A biologist studies a population of bacteria that grows to 2.5 x 10^9 in a petri dish. If she divides this population into 5 equal parts, how many bacteria are in each part?

• 2 x 10^9

• 1 x 10^9

• 5 x 10^7

• 5 x 10^8

A space probe travels a distance of 6.4 x 10^7 kilometers to reach a planet. If it travels at a speed of 8 x 10^3 kilometers per hour, how many hours does it take to reach the planet?

• 1000 hours

• 12000 hours

• 8000 hours

• 4000 hours

A city has a population of 1.2 x 10^6 people. If the city divides its population into 4 equal districts, how many people are in each district?

• 250000

• 400000

• 500000

• 300000

A researcher finds that a certain chemical is present in 5.0 x 10^4 liters of water. If she needs to divide this amount into 2.5 x 10^2 liter containers, how many containers can she fill?

• 150

• 250

• 100

• 200

A telecommunications company has 3.6 x 10^9 bytes of data to distribute. If they divide this data equally among 1.2 x 10^3 users, how much data does each user receive?

• 1.2 x 10^6 bytes

• 3.0 x 10^6 bytes

• 2.5 x 10^6 bytes

• 4.5 x 10^6 bytes

A library has 8.0 x 10^5 books. If they want to organize these books into 2.0 x 10^3 sections, how many books will be in each section?

• 5.0 x 10^2

• 3.0 x 10^2

• 2.0 x 10^3

• 4.0 x 10^2

A farmer harvests 4.5 x 10^4 apples. If he packs them into boxes that hold 1.5 x 10^2 apples each, how many boxes does he need?

• 400

• 250

• 150

• 300

A school has 2.0 x 10^3 students. If they want to divide the students into groups of 5, how many groups will they have?

• 500

• 450

• 350

• 400