Significant Figures & Density

Which of the following numbers has three significant figures?

• 1014 miles
• 101 feet
• 1000 yards
• all of the choices

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 0.998005

• 9
• 10
• 6
• 5

What is 0.658 rounded to 1 significant figure?

• 0
• 0.66
• 0.7
• 0.658

0.0015289

Round to 3 significant figures.

153.89

Round to 2 significant figures.

Round 509.96 to 4 significant figures

• 509.9

• 509.0

• 510.0

• 510

Calculate 12.47 ÷ 3.2 and give your answer with the correct number of significant figures.

• 4

• 3.9

• 3.90

• 3.897

Calculate 7.987 - 0.54  and give your answer with the correct number of significant figures.

• 7.45

• 7.447

• 7.4

• 7.5

Which of the following numbers have four significant figures?

• 56.75 g
• 40.01 g
• 0.6000 g
• all of the choices