Significant Figures

0.0010005337000
The blue zeros are...

• Leading zeros
• Captive zeros
• Trailing zeros

0.0010005337000
The red zeros are...

• Leading zeros
• Captive zeros
• Trailing zeros

0.0010005337000
The green zeros are...

• Leading zeros
• Captive zeros
• Trailing zeros

Nonzero numbers in a measurement are

• always significant
• never significant
• significant if there is a decimal point

Leading zeros in a measurement are

• always significant
• never significant
• significant if there is a decimal point

Captive zeros in a measurement are

• always significant
• never significant
• significant if there is a decimal point

Trailing zeros in a measurement are

• always significant
• never significant
• significant if there is a decimal point

How many significant figures does the following measurement have: 
0.002 040

• 6
• 4
• 7
• 2

How many significant figures does the following measurement have: 
0.998 005

• 2
• 4
• 6
• 7

How many significant figures does the following measurement have: 
100.002 10

• 7
• 5
• 10
• 8