Dimensional Analysis Practice

On Dr. V's bookshelf, there are 23 science textbooks, each with an average of 31 chapters. If each chapter contains 5 pages, how many total pages are there? (Round your answer to 2 significant figures)

• 3.6 x 10⁴ pages

• 36 pages

• 3.6 x 10² pages

• 3600 pages

A child weighing 40.0 lb needs to take 0.10 mg of an antibiotic for each kg of body weight. How many milligrams of the antibiotic should be administered to the child? 1 kg = 2.2 lbs

• 18.1 mg

• 181 mg

• 0.181 mg

• 1.81 mg

How many decades are equal to 1.7 x 10²⁵ minutes? Round your final answer to 2 significant figures

(60 min = 1 hour; 24 hours = 1 day; 7 days = 1 week; 52 weeks = 1 year; 10 years = 1 decade)

• 3.2 x 10¹⁸ decades

• 3.2 x 10¹⁹ decades

• 1.2 x 10²² decades

• 2.3 x 10²⁰ decades

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

Tags

CCSS.6.EE.B.7

Varia is studying abroad in Europe. She is required to pay $3,500 (in US dollars) per year to the university; however, she must pay in euros. How many euros can Varia expect to pay per month to the university? (Round to the nearest whole euro.)

0.7306 euros = 1 US dollar

• 312 Euros

• 123 Euros

• 213 Euros

• 321 Euros

Your roof has a leak. If it leaks at a rate of 14 drops per minute, how many hours will it take to fill a 5 gallon bucket? (20 drops = 1 mL; 30 mL = 1oz; 64 oz = 1 gal) [Round your answer to 2 significant figures]

• 230 hours

• 950 hours

• 190 hours

• 1900 hours