Significant Figures and Scientific Notation

Convert the number 0.00345 to scientific notation.

• 3.45 x 10^-2

• 3.45 x 10^3

• 3.45 x 10^2

• 3.45 x 10^-3

How many significant figures are in the number 0.000870?

• 1

• 2

• 4

• 3

Round the number 0.00856 to 2 significant figures.

• 0.009

• 0.0086

• 0.008

• 0.01

What is the result of adding 3.45 and 0.0021, rounded to the correct number of significant figures?

• 3.4

• 3.5

• 3.4521

• 3.45

Convert the number 450,000 to scientific notation.

• 4.5 x 10^5

• 450 x 10^3

• 45 x 10^4

• 4.5 x 10^4

How many significant figures are in the number 8.9000?

• 1

• 2

• 3

• 5

What is the result of subtracting 0.0078 from 0.012, rounded to the correct number of significant figures?

• 0.0042

• 0.0048

• 0.0045

• 0.004

Multiply 2.5 by 0.003 and express the result in scientific notation.

• 7.5e-5

• 7.5e-3

• 7.5e-4

• 7.5e-2

How many significant figures are in the number 0.005600?

• 3

• 4

• 5

• 2

Divide 4.56 by 0.042 and express the result in scientific notation.

• 1.1e2

• 1.0857e3

• 1.0857e1

• 1.0857e-1