Mastering Scientific Notation: Adding and Converting Numbers

Mastering Scientific Notation: Adding and Converting Numbers

8th Grade

10 Qs

quiz-placeholder

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Mastering Scientific Notation: Adding and Converting Numbers

Mastering Scientific Notation: Adding and Converting Numbers

Assessment

Quiz

English, Mathematics

8th Grade

Practice Problem

Hard

CCSS
8.EE.A.4

Standards-aligned

Created by

Anthony Clark

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A scientist measures the mass of a small asteroid as 4.5 x 10^12 kg and another asteroid as 3.2 x 10^12 kg. What is the total mass of both asteroids in scientific notation?

5.7 x 10^12 kg

7.7 x 10^12 kg

8.2 x 10^12 kg

6.5 x 10^12 kg

Tags

CCSS.8.EE.A.4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A bacteria culture grows to 1.2 x 10^6 cells in one hour and 2.5 x 10^6 cells in the next hour. How many cells are there in total after two hours in scientific notation?

2.0 x 10^6

1.5 x 10^6

4.5 x 10^6

3.7 x 10^6

Tags

CCSS.8.EE.A.4

3.

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 5 hours, how far does it go in scientific notation?

1.30 x 10^5 km

1.20 x 10^5 km

1.15 x 10^5 km

1.00 x 10^5 km

Tags

CCSS.8.EE.A.4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A researcher finds that a certain chemical is present in 6.7 x 10^3 mg in one sample and 2.1 x 10^3 mg in another. How much chemical is present in total in scientific notation?

9.0 x 10^3 mg

8.8 x 10^3 mg

7.8 x 10^3 mg

5.5 x 10^3 mg

Tags

CCSS.8.EE.A.4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An astronomer observes a star that is 3.0 x 10^20 km away. If another star is 1.5 x 10^20 km closer, how far is the second star from Earth in scientific notation?

2.5 x 10^20 km

3.0 x 10^20 km

1.0 x 10^20 km

1.5 x 10^20 km

Tags

CCSS.8.EE.A.4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A computer processes 1.5 x 10^9 calculations per second. If it runs for 2 seconds, how many calculations does it perform in total in scientific notation?

3.0 x 10^9

3.0 x 10^8

1.5 x 10^9

6.0 x 10^9

Tags

CCSS.8.EE.A.4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A factory produces 4.5 x 10^5 widgets in one day and 3.2 x 10^5 widgets the next day. How many widgets are produced over the two days in scientific notation?

6.5 x 10^5

7.7 x 10^5

7.0 x 10^5

8.0 x 10^5

Tags

CCSS.8.EE.A.4

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