Metric Conversion and Dimensional Analysis

If 1 inch = 2.54 centimeters, how many inches are in 120 centimeters?

• 47.244 in

• 304.8 in

• 47.244 cm

• 304.8 cm

A 30 g serving of a certain breakfast cereal has 0.5 g of salt. How much salt would that be in milligrams?

• 500mg

• 480mg

• 720mg

• 375mg

Which statement uses SI unit prefixes correctly?

• 100 cm = 10 km

• 2.5 kg = 2500 cg

• 1000 mL = 1 dL

• 150 cm = 1.5 m

A systematic approach to problem solving that uses conversion factors to move from one unit to another

• dimensional analysis

• conversion factor

• scientific notation

• percent error

A ratio of equivalent values used to express the same quantity in different units; is always equal to 1 and changes the units of a quantity without changing its value

• conversion factor

• percent error

• dimensional analysis

• scientific notation

You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.

• 25 mg

• 25,000 mg

• 250 mg

• 2500 mg

Convert 3.5 gallons into cups. (1gal = 16cups)

• 56 cups

• 0.21875 cups

• 19.5 cups

• 48 cups

1 m

• 100 cm

• 1000 cm

• 10 cm

• 0.1 cm

1 liter

• 100 ml

• 1000 ml

• 10 ml

• 0.1 ml

1 kg

• 100 g

• 1000 g

• 10 g

• 0.1 g