Significant Figures

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: 100.00210

• 7
• 8
• 10
• Ambiguous: 7 or 8

Round 1289 to three significant figures

• 1290
• 130
• 1300
• 1.29x10³

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

• 1.39x10³
• 1387
• 1390
• 1400

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

What is 78.5 rounded to one significant figure?

• 79

• 78.5

• 70

• 80

Round 0.010229 to four significant figures

• 1022

• 1023

• 0.01023

• 0.01022

What is 0.658 rounded to 1 significant figure?

• 0

• 0.66

• 0.7

• 0.658

What is 7.555 rounded to two significant figures?

• 7.6

• 7.5

• 70

• 76

• 7.60

Round 52689 to 3 significant figures.

• 526
• 527
• 52600
• 52700