Understanding Significant Figures

Which of the following numbers has three significant figures?

• 4500

• 0.0045

• 123

• 0.0450

In the number 200, how many significant figures are there?

• Two

• Three

• Four

• One

If a number is written as 2.00, how many significant figures does it have?

• One

• Four

• Two

• Three

How many significant figures are in the number 0.021?

• Four

• Three

• Two

• One

What is the total number of significant figures in 6070.3020?

• Six

• Seven

• Eight

• Nine

How many significant figures does the number 300.0 have?

• Four

• One

• Two

• Three

In scientific notation, how many significant figures are in 5.0 x 10^3?

• Four

• One

• Two

• Three

When adding 3.01 and 26.6, how many significant figures should the decimal portion of the result have?

• Four

• One

• Two

• Three

When multiplying 4.07 by 2.1, how many significant figures should the result have?

• One

• Two

• Three

• Four

What is the correct way to round 8.547 to two significant figures?

• 8.54

• 8.55

• 8.5

• 8.6