WorksheetsSigfigs and Sci-Notation
Total questions: 10
Worksheet time: 9mins
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 × 108 have?
a)
3
b)
4
c)
6
d)
8
3.
Round 1009 to three sig figs
a)
100
b)
101
c)
1010
d)
1000
4.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
5.
1145.678 + 4.56 + 623.9789 + 78.1 = ? (Use significant figures!)
a)
1853.3
b)
2000
c)
1952.3
d)
1852.3
6.
Solve & Round to Correct Sig Figs.
100 / 2.0 =
100 / 2.0 =
a)
50
b)
50.
c)
50.0
d)
50.00
7.
Multiply (2.45 x 108) x (8.78 x 106) and express in scientific notations.
a)
2.15 x 1014
b)
2.15 x 1015
c)
2.10 x 1014
d)
2.10 x 1015
8.
Express 7.89 x 10-8 in common notation.
a)
0.0000000789
b)
0.789
c)
0.00000789
d)
0.000000000789
9.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
10.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
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