# Calculations Review WKS

Calculations Review
I.
II.
III.
Name __________________ Per. ______
Make the following conversions.
1)
423 g to __________ mg
4)
0.00372 m to __________ hm
2)
2000 mm to __________ m
5)
0.023 ml to __________kL
3)
50.2 mL to __________ L
6)
143 hg to __________mg
Write the correct number of significant figures for each of the following measurements.
1)
4.2 cm
__________
4)
.011 mL
__________
2)
800 g
__________
5)
0.00001 g
__________
3)
0.0010 mg
__________
6)
500 mL
_________
Perform the following math operations. Be sure to show the answer with the correct number of
significant figures and units or it will be wrong.
IV.
1)
11.3 cm
&times;
4.3 cm =
2)
2.2 cm
&times;
3)
5.33 m
/ (4.22 s
&times;
3.22 s
4)
6.45 g
+
+
7g =
5)
11.32 g
6)
253.01 g
7)
56.93 g
6.32 cm
5.32 g
__________
&times;
7.001 cm
&times;
=
__________
6.23 s) =
__________
__________
+
0.0001 g =
__________
-
44.332 g =
__________
-
23.1 g
-10.01 g =
__________
Convert the following numbers either from, or to exponential notation. Be sure to use the concept of
significant figures.
V.
1)
0.450
__________
4)
1.95 &times; 10-2
__________
2)
0.000026
__________
5)
2 &times; 105
__________
3)
4560000
__________
6)
8.235 &times; 10-3 __________
Perform the following math operations and report the answer using proper exponential notation. Be
sure to use the concept of significant figures and include units with your answers.
1)
4 &times; 103 g
&times;
5 &times; 104 g =
2)
3.45 &times; 10-2 mL &times;
6.4 &times; 103 mL =
__________
3)
(6.333 &times; 105 g )
(3.20 &times; 104 mL) =
__________
4)
(2.14 &times; 10-4 g)
-
(1.25 &times; 10-3 g) =
__________
5)
(9.9 &times; 104 m)
+
(4.3 &times; 103 m) =
__________
6)
8.05 &times; 102 m
&times;
1.2 &times; 104 m
/
__________
&times;
4.9 &times; 10-2 m =
__________