7th Grade Scientific Notation: Subtraction & Multiplication Challenges

7th Grade Scientific Notation: Subtraction & Multiplication Challenges

7th Grade

10 Qs

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7th Grade Scientific Notation: Subtraction & Multiplication Challenges

7th Grade Scientific Notation: Subtraction & Multiplication Challenges

Assessment

Quiz

English, Mathematics

7th Grade

Hard

Created by

Anthony Clark

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A scientist measures the mass of a small particle as 3.5 x 10^-27 kg. If another particle has a mass of 1.2 x 10^-27 kg, what is the difference in their masses in scientific notation?

1.5 x 10^-27 kg

3.0 x 10^-27 kg

2.3 x 10^-27 kg

4.7 x 10^-27 kg

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A cell in a petri dish contains 2.5 x 10^6 bacteria. After a day, the number of bacteria doubles. How many bacteria are there now, expressed in scientific notation?

1.0 x 10^7

5.0 x 10^5

2.0 x 10^6

5.0 x 10^6

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The distance from Earth to a nearby star is approximately 4.2 x 10^16 meters. If a spacecraft travels 1.5 x 10^16 meters towards the star, how far is it from the star now in scientific notation?

4.0 x 10^16 meters

1.2 x 10^16 meters

3.5 x 10^16 meters

2.7 x 10^16 meters

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A comet is traveling at a speed of 2.3 x 10^4 km/h. If it travels for 3.5 hours, how far does it travel in scientific notation?

9.1 x 10^4 km

6.3 x 10^4 km

7.5 x 10^4 km

8.05 x 10^4 km

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A researcher finds that a certain chemical is present in a solution at a concentration of 5.0 x 10^-3 mol/L. If 2.0 x 10^-3 mol/L is removed, what is the new concentration in scientific notation?

5.0 x 10^-3 mol/L

2.0 x 10^-3 mol/L

3.0 x 10^-3 mol/L

4.0 x 10^-3 mol/L

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The height of a mountain is approximately 8.8 x 10^3 meters. If a valley is 2.5 x 10^3 meters deep, what is the difference in height between the mountain and the valley in scientific notation?

6.3 x 10^3

1.13 x 10^4

9.0 x 10^3

1.0 x 10^4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A computer processes data at a rate of 1.2 x 10^9 bits per second. How much data can it process in 5 seconds, expressed in scientific notation?

7.2 x 10^9 bits

6.0 x 10^9 bits

5.0 x 10^9 bits

1.0 x 10^9 bits

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