Significant Figures Practice

How many significant figures does the following number have?
0.00345

• 6
• 5
• 3
• Ambiguous: 3,4,5, or 6

How many significant figures does the following number have: 0.00204

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 100.00210

• 7
• 8
• 10
• Ambiguous: 7 or 8

Solve and give your answer with the correct number of significant figures
24.28 + 12.5

• 3.687 x 10¹
• 36.8
• 37
• 3.70x10¹

Solve and give your answer with the correct number of significant figures
1421-34

• 1.39x10³
• 1387
• 1390
• 1400

Which of the following numbers have four significant figures?

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

Round 509.96 to 4 significant figures

• 509.9

• 509.0

• 510.0

• 510

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

• 4 m/s
• 3.9 m/s
• 3.90 m/s
• 3.897 m/s

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

• 7.45 m
• 7.447 m
• 7.4 m
• 7.5 m

What is 78.5 rounded to one significant figure?

• 79

• 78.5

• 70

• 80