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Mastering Addition and Subtraction in Scientific Notation

Authored by Anthony Clark

English, Mathematics

6th Grade

CCSS covered

Mastering Addition and Subtraction in Scientific Notation
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10 questions

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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 2.1 x 10^-27 kg, what is the total mass of both particles in scientific notation?

4.5 x 10^-27 kg

3.0 x 10^-27 kg

5.6 x 10^-27 kg

6.0 x 10^-27 kg

Tags

CCSS.8.EE.A.4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A comet is traveling at a speed of 4.5 x 10^4 km/h. If it slows down by 1.2 x 10^4 km/h, what is its new speed in scientific notation?

4.5 x 10^4 km/h

2.3 x 10^4 km/h

3.3 x 10^4 km/h

5.7 x 10^4 km/h

Tags

CCSS.8.EE.A.4

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 spaceship travels 1.5 x 10^16 meters towards the star, how far is it from the star now in scientific notation?

3.5 x 10^16 meters

4.0 x 10^16 meters

1.2 x 10^16 meters

2.7 x 10^16 meters

Tags

CCSS.8.EE.A.4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A bacterium can reproduce every 20 minutes, and after 3 hours, there are approximately 1.2 x 10^6 bacteria. If 3.0 x 10^5 bacteria die, how many bacteria are left in scientific notation?

8.0 x 10^5

9.0 x 10^5

1.0 x 10^6

7.5 x 10^5

Tags

CCSS.8.EE.A.4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A cell phone tower can transmit signals over a distance of 2.5 x 10^3 meters. If a new tower is built that can transmit signals over 1.0 x 10^3 meters less, what is the new transmission distance in scientific notation?

1.5 x 10^3 meters

3.0 x 10^3 meters

2.0 x 10^3 meters

1.0 x 10^3 meters

Tags

CCSS.8.EE.A.4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A small planet has a diameter of 1.2 x 10^7 meters. If another planet has a diameter of 3.4 x 10^6 meters, what is the combined diameter of both planets in scientific notation?

1.54 x 10^7 meters

2.5 x 10^7 meters

1.2 x 10^6 meters

3.0 x 10^7 meters

Tags

CCSS.8.EE.A.4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A factory produces 5.0 x 10^4 widgets in a day. If production decreases by 1.5 x 10^4 widgets, how many widgets are produced in a day now in scientific notation?

4.0 x 10^4

2.5 x 10^4

5.5 x 10^4

3.5 x 10^4

Tags

CCSS.8.EE.A.4

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