Measurement, Math, and Sig Figs

How would you record measurement A?

• 7.8

• 7.82

• 7.825

• 8

What is the volume shown in this graduated cyclinder?

• 24.0 mL

• 24 mL

• 23.7 mL

• 23 mL

Which answer best approximates the metric temperature reading on the thermometer?

• 82.9 F

• 86 C

• 30 C

• 30.0 C

What is the length of the screw?

• 5.0cm

• 5.1cm

• 5.11cm

• 51mm

Which is the more precise measurement?

• 4 mL

• 4.3 mL

• 4.30 mL

• 4.300 mL

To make a proper measurement...

• write down only the certain digits.

• write down all certain digits and one estimated digit.

• write down all certain digits and a few estimated digits.

• look at the instrument carefully

Convert this number into scientific notation: 0.068

• 6.9 x 10⁶

• 6.8 x 10^-9

• 6.8 x 10^-2

• None of the above

Convert this number into scientific notation: 950,000

• 9.5 x 10⁵

• 9.5 x 10^-9

• 9.5 x 10²

• None of the above

Which number is the least in value

• 5.0 x 10^-9

• 5.0 x 10^-4

• 5.0 x 10⁶

• 5.0 x 10⁸

Determine the number of significant digits of 4.7500

• 3

• 4

• 5

• 6