Significant Figures!

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 2001800.

• 1
• 4
• 6
• 7

How many significant figures does the following number have: 0.0079010

• 1
• 4
• 5
• 9

How many significant figures does the following number have: 0.065102

• 1
• 2
• 4
• 5

How many significant figures does the following number have: 1740200

• 2
• 1
• 3
• 5

Calculate 12.34 + 1.234 + 0.1234

• 13.6974
• 13.697
• 13.70
• 13.7

Calculate 12.34 × 1.234 × 0.1234

• 1.87908
• 1.879
• 1.9
• 1.8790809

Round 0.010229 to four sig figs

• 1022
• 1023
• 0.01023
• 0.01022

Round 1009 to three sig figs

• 100
• 101
• 1010
• 1000

Three different people weigh a standard mass of 2.00 g on the same balance.  Each person obtains a reading of 7.32 g for the mass of the standard.  These results imply that the balance that was used is ____.

• accurate
• precise
• accurate and precise
• neither accurate nor precise