Unit 1 Exam Review

How many sig. fig. are in the number below:
350.540

• 4
• 5
• 6
• 7

How many sig. fig. are in the number below:
0.0005

• 1
• 2
• 3
• 4

Which measurement contains 3 sig figs?

• 200 mL
• 20.0 mL
• 0.02 mL
• 0.020mL

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

Round 1009 to three sig figs

• 100
• 101
• 1010
• 1000

Which of the following choices best represents the volume reading from the graduated cylinder pictured?

• 61 mL

• 61.5 mL

• 67 mL

• 67.0 mL

Type in the measurement on the graduated cylinder to the correct number of significant digits. No unit.

• 6.300

• 6.3

• 6.32

• 7.70

Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷
• 0.12  x  10⁷
• 1.2  x  10⁶
• 1.2  x  10⁷

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5
• 3.98  x  10^-5
• 3.98  x  10^-4
• 39.8  x  10^-6

Which number is correctly written in scientific notation?

• 5.67 x 10⁵
• 56.7 x 10³
• 0.567 x 10⁶