Sig-Fig and Calculations Practice

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Sig Fig / SI / Units Practice
Name: __________________________
1) Determine the number of significant figures in each measurement.
a) 0.05730 m
b) 143 g
c) 0.00073 m
d) 8.750 x 10-2 g
2) Round each measurement to three significant figures.
a) 0.01552 m ____________________________
b) 9009 m _______________________________
c) 1.7777 x 10-3 m ________________________
d) 629.55 m _____________________________
e) 9459 m_______________________________
4) Complete the table.
Operation
Rule
(Add/Subt/Mult
/Div)
(Fewest Decimal Places /
Fewest Sig Figs)
Unrounded
Answer
Rounded
Answer
9.44 m – 2.1 m
8432 m / 12.5 m
2.58 x 10-3 s x 6.1 x 10-5 s
5) Calculate the volume of a warehouse that has inside dimensions of 22.4 m by 11.3 m by 5.2 m.
(Volume = l x w x h) Use the correct significant digits in your answer and show all
work.
How many significant figures are in these numbers?
1)
1234 _____
6)
1090.0010 _____
2)
0.023 _____
7)
0.00120 _____
3)
890 _____
8)
3.4 x 104 _____
4)
91010 _____
9)
9.0 x 10-3 _____
5)
9010.0 _____
10)
9.010 x 10-2 _____
Perform the following calculations and round according to the appropriate rule.
Calculator Answer
11) 4.60 + 3
12) 0.008 + 0.05
13) 200 – 87.3
14) 67.5 – 0.009
15) 13.7 x 2.5
16) 200 x 3.58
17) 5000 / 55
18) 5003 / 3.781
Rounded Answer
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