Dimensional Analysis Quiz

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

• 25 mg
• 25,000 mg
• 250 mg
• 2500 mg

How many kilograms of calcium are there in 173 pounds of calcium? (1 pound = 454 grams; 1 kg = 1000 g)

• 1.10 kg

• 78.5 kg

• 110 kg

• 78500 kg

Convert 62 miles/hour to feet/second

• 5,456 feet/second

• .003 feet/second

• 90.9 feet/second

• 909 feet/second

Tags

NGSS.MS-PS3-1

What unit should be in the denominator of the conversion factor?

• yards
• leagues
• feet
• fathoms

What unit should be in the numerator of the conversion factor?

• yards
• leagues
• feet
• fathoms

Gas costs $3.05 a gallon, and your car travels at 27 miles for each gallon of gas. How far can you travel in your car with $95 in your pocket?

• 11 miles
• 840 miles
• 7800 miles
• 870 miles

If you are converting 490 grams to pounds, which 2 of the following conversion factors would you use?

• 28.3 grams = 1 ounce

• 16 ounces = 1 lb.

• 1 lb = 0.45 kg

• 1 kg = 2.2 lbs

All conversion factors are equal to _______.

• zero

• one

• ten

• original units

Which conversion fraction would be needed from this starting amount?

• 
• 
• 

A child weighs 40.0 lb and is to receive 0.10 mg of an antibiotic for each kg of body weight. How many milligrams of the antibiotic shall the child receive? 1 kg = 2.2 lbs

• 18.1 mg

• 181 mg

• 0.181 mg

• 1.81 mg