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WorksheetsSignificant Figures and Scientific Notation
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
How many significant figures does the following number have: 0.998005
a)
9
b)
10
c)
6
d)
5
2.
How many significant figures does 1.90 have?
a)
2
b)
4
c)
6
d)
8
3.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
4.
Round 1009 to three sig figs
a)
100
b)
101
c)
1010
d)
1000
5.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
6.
1145.678 + 4.56 + 623.9789 + 78.1 = ? (Use significant figures!)
a)
1852.3
b)
2000
c)
1952.3
d)
1853.5
7.
Solve & Round to Correct Sig Figs.
100 / 2.0 =
100 / 2.0 =
a)
50
b)
50.
c)
50.0
d)
50.00
8.
Solve & Round to Correct Sig Figs.
4.5 x 2.34 =
4.5 x 2.34 =
a)
11
b)
10.52
c)
10.5
d)
10
9.
1345.567 / 23.56 = ? (Use significant figures!)
a)
57.11
b)
58.11
c)
56.75
d)
83.49
10.
Express 7.89 x 10-8 in common notation.
a)
0.0000000789
b)
0.789
c)
0.00000789
d)
0.000000000789
11.
Multiply (2.45 x 108) x (8.78 x 106) and express in scientific notations.
a)
2.15 x 1015
b)
2.15 x 1014
c)
2.10 x 1014
d)
2.10 x 1015
12.
Express 23400 in proper scientific notation.
a)
2.34 x 104
b)
2.3 x 103
c)
2.30 x 105
d)
2.34 x 103
13.
The diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?
a)
1.54 x 1012 m
b)
1.54 x 10-12 m
c)
1.54 x 1010 m
d)
1.54 x 10-10 m
14.
The chief advantage of the metric system over other systems of measurement is that it ____.
a)
has more units
b)
is in multiples of 10
c)
is in French
d)
is derived from nature itself
15.
What is the quantity 0.0075 meters expressed in centimeters?
a)
0.075 cm
b)
0.75 cm
c)
7.5 cm
d)
70.5 cm
16.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
17.
Add (7.405 x 104) + (5.15 x 10-6) and express in standard form.
a)
7405
b)
74050.0000051
c)
74050.51
d)
74050.000000000051
18.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
19.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
20.
Which of the following measurements contains two significant figures?
a)
0.00400 L
b)
0.00404 L
c)
0.00044 L
d)
0.00440 L
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