Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Which
of the following measurements contains two significant figures? a. | 0.004 00
L | c. | 0.000 44
L | b. | 0.004 04
L | d. | 0.004 40
L | | | | |
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2.
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Which
of the following measurements is expressed to three significant figures? a. | 0.007
m | c. | 7.30  10
km | b. | 7077
mg | d. | 0.070
mm | | | | |
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3.
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In
the measurement 0.503 L, which digit is the estimated digit? a. | 5 | b. | the 0 immediately to the left of the
3 | c. | 3 | d. | the 0 to the left of the decimal
point | | |
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4.
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How
many significant figures are in the measurement 0.003 4 kg? a. | two | c. | five | b. | four | d. | This cannot be determined. | | | | |
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5.
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How
many significant figures are in the measurement 40,500 mg?
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6.
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How
many significant figures are in the measurement 811.40 grams?
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7.
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Express the sum of 1111 km and 222 km using the correct number of significant
digits. a. | 1300
km | c. | 1333
km | b. | 1330
km | d. | 1333.0
km | | | | |
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8.
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Express the sum of 7.68 m and 5.0 m using the correct number of significant
digits. a. | 12.68
m | c. | 13
m | b. | 12.7
m | d. | 10
m | | | | |
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9.
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Express the product of 2.2 mm and 5.00 mm using the correct number of significant
digits. a. | 10 mm | c. | 11.0 mm | b. | 11 mm | d. | 11.00
mm | | | | |
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10.
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What
is the measurement 111.009 mm rounded off to four significant digits? a. | 111
mm | c. | 111.01
mm | b. | 111.0
mm | d. | 110
mm | | | | |
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11.
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What
is the measurement 1042 L rounded off to two significant digits? a. | 1.0  10
L | c. | 1050
L | b. | 1040
L | d. | 1.1  10
L | | | | |
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12.
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Express the product of 4.0  10 m and 8.1  10 m using the correct number of significant digits.
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13.
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What
is the volume of a salt crystal measuring 2.44  10 m by 1.4  10 m by 8.4  10
m?
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Short Answer
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14.
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The
following length measurements were taken by students using several different measuring devices. Find
the average of the measurements. Make sure that your answer has the correct number of significant
figures.
10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm
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15.
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Round
off the measurement 0.003 095 5 m to three significant figures.
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16.
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What
is the sum of 2.7 g and 2.47 g expressed in the correct number of significant digits?
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17.
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What
is the sum of 6.210 L and 3 L expressed in the correct number of significant digits?
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18.
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What
is the product of the number 1000 and the measurement 0.003 57 m expressed in the correct number of
significant digits?
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19.
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The
mass of the electron is 9.109 39  10 kg. Express the mass of the electron to 1, 2, 3, and 4 significant
figures.
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20.
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Perform the following operation: 3.43 cm  5.2 cm. Make sure that
your answer has the correct number of significant figures.
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Essay
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21.
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Describe the rules that are used to determine the number of significant figures in the
results of addition, subtraction, multiplication, and division.
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