Significant Figures and Notation practice

How many significant figures are in the number 0.00450?

• 2

• 3

• 4

• 5

• 320

• 32,000

• 3,200

• 320,000

Which of the following numbers has 5 significant figures?

• 0.005600

• 0.05600

• 5600

• 560.00

Convert 0.00089 to scientific notation.

Which digit is the last significant figure in the number 0.07020?

• 7

• 0 (the last zero)

• 2

• 0 (the first zero)

Which of the following is the correct rule for counting significant figures in a measured number?

• All zeros are always significant.

• Only nonzero digits are significant.

• All nonzero digits and zeros between them or after a decimal point are significant.

• Only digits before the decimal point are significant.

Round 0.006789 to three significant figures.

• 0.0067

• 0.00679

• 0.0068

• 0.00679

How many significant figures are in the number 120.0?

• 2

• 3

• 4

• 5

Convert 5,600,000 to scientific notation with two significant figures.

Which of the following numbers has exactly 2 significant figures?

• 0.0200

• 20

• 2.0

• 200