# Worksheet: Number Operations in Scientific Notation

In this worksheet, we will practice performing arithmetic operations with numbers expressed in scientific notation.

Q1:

• A
• B
• C
• D

Q2:

• A
• B
• C
• D

Q3:

Express in scientific notation.

• A
• B
• C
• D
• E

Q4:

How many times larger is than ?

• A0.3 times
• B0.03 times
• C300 times
• D3 times
• E30 times

Q5:

How many times smaller is than ?

• A3,000 times
• B30,000 times
• C300,000 times
• D3,000,000 times
• E300 times

Q6:

Light from the sun takes 13 minutes to reach one of the planets. Given that light travels at a speed of m/s, determine the distance between the sun and that planet.

• A meters
• B meters
• C meters
• D meters

Q7:

If the thickness of a sheet of paper is 0.004 cm, what is the height of a stack of 450 sheets of paper?

• A cm
• B cm
• C cm
• D18 cm

Q8:

• A
• B
• C
• D
• E

Q9:

• A
• B
• C
• D
• E

Q10:

Evaluate , expressing it in scientific notation.

• A
• B
• C
• D
• E

Q11:

How many times larger is than ? Give your answer in scientific notation.

• A
• B
• C
• D
• E

Q12:

Given that sunlight travels at a speed of m/s, determine how long it takes for sunlight to reach a planet that is 126 million kilometers away from the sun.

Q13:

• A
• B
• C
• D

Q14:

• A
• B
• C
• D
• E

Q15:

• A
• B
• C
• D

Q16:

Write in standard form.

• A
• B
• C
• D

Q17:

How many times smaller is than ?

• A4,000,000 times
• B200,000 times
• C2,000,000 times
• D400,000 times
• E20,000,000 times

Q18:

An electron has a mass of approximately kg. The sun has a mass of approximately kg. How many times heavier is the sun than an electron? Give your answer in the form where is a whole number.

• A
• B
• C
• D
• E

Q19:

The circumference of Earth is about km and the circumference of Jupiter is about km. How many times larger is the circumference of Jupiter than the circumference of Earth?

• A10 times
• B100 times
• C1,000 times
• D0.1 times
• E0.01 times

Q20:

How many times larger is than ?

• A200,000 times
• B2,000 times
• C20,000 times
• D20,000,000 times
• E2,000,000 times

Q21:

The mass of the sun is about kg and the mass of Earth is about kg. To the nearest whole number, how many times larger is the mass of the sun than the mass of Earth?

• A3,333,333 times
• B333,333 times
• C33,333 times
• D333 times
• E3,333 times

Q22:

How many times larger is than ?

• A0.02 times
• B20 times
• C200 times
• D2 times
• E0.2 times

Q23:

How many times larger is than ?

• A2,000 times
• B200,000 times
• C20,000,000 times
• D2,000,000 times
• E20,000times

Q24:

A paper clip has a mass of kg and a brick has a mass of approximately 3 kg. How many times heavier is the brick than the paper clip?

• A6,000 times
• B6,000,000 times
• C600,000 times
• D600 times
• E60,000 times

Q25:

The population of Canada is about and the population of the United States is about . How many times larger is the popuation of the United States than the population of Canada?

• A0.75 times
• B13.33 times
• C7.5 times
• D0.133 times
• E75 times