Metric Conversion Practice Name ____________________________________

Make the following conversions both ways, by moving decimal points and by using conversion factors. When using conversion factors show your work and include the units.

	Answer	Conversion factor work
1. 46 cm to m		46 cm =
2. 499 dL to cL		499 dL =
3. 105 cm to kilometers
4. 0.0031 mm to km
5. 5.46 x 10^-5 g to μg
6. 465,000 ng to mg
7. 8500 cm to km
8. 6.7 x 10^6 μL to mL
9. 48,000,000 kg to mg
10. 780 mm to m

11. Perform the indicated operations and round off your answers to the proper number of significant

figures. Assume that all numbers were obtained from measurements.

(a) 18.56 + 1.233 =

(b) 1.234 x 0.247 =

(c) 4.3 / 8.74=

(d) 8.6490-2.8964 =

e) 0.0043 + 1.23 =

f) 1.87 x 13.00

g) 30.5 + 80.8

h) 0.002 / 4.83

12. Perform the indicated operations and round off your answers to the proper number of significant figures. Assume that all numbers were obtained from measurements. Express your answers in exponential notation.

(a) (1.54 x 10³) + (2.11 x 10³) =

(b) (1.54 x 10³) - (2.11 x 10²) =

(c) (1.23 x 10²) / (4.56 x 10³) =

(d) (4.56 x 10^-4) + (1.23 x 10^-2) =

(e) ( 8.7 x 10²) x (1.23 x 10^-2) =

(f) ( 8.7 x 10⁴) / (8.67 x 10^-8) =

(g) ( 8.3687 x 10⁶) - (5.4 x 10⁴) =

(h) ( 6.54 x 10²) / (3.27 x 10^-5) =