1 / 20

Chapter 2: Proportions

Will the Winners Lose?. Chapter 2: Proportions. Rules. A team will be given a question (the other teams should work on it because they might get a chance to steal). Answer Correctly- Choose a card that determines point values or choose not to get a card.

velvet
Download Presentation

Chapter 2: Proportions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Will the Winners Lose? Chapter 2: Proportions

  2. Rules • A team will be given a question (the other teams should work on it because they might get a chance to steal). • Answer Correctly- Choose a card that determines point values or choose not to get a card. Answer Incorrectly- Next team gets a chance to answer 3) The team with the most points at the end wins.

  3. Solve the proportion

  4. Solve using a proportion. 5 is what percent of 30?

  5. Solve using a proportion. • A park ranger tagged 20 black bears in his natural reserve. A few days later from his survey tower, counted a sample size of 45 bear where 5 of them were tagged. What is the estimated number of bears in the nature reserve?

  6. Convert using dimensional analysis. • The local tailor found 40 extra yards of fabric in the back storage room. If he wanted to sell the extra fabric by the foot, how much would he have?

  7. Direct Variation • Write a direct variation equation that relates y feet to x miles.

  8. Solve the proportion.

  9. Solve using a proportion. Calcium and phosphorus play important roles in building human bones. A healthy ratio of calcium to phosphorus is 5 to 3. If Mario’s body contains 2.5 pounds of calcium, how much phosphorus should his body contain?

  10. Solve using a proportion. 15% of what is 30?

  11. Solve using a proportion. • An oceanographer tagged several sharks off the coast of South Africa near Seal Island. The estimated population of the sharks is 128. She recorded a sample of 16 sharks and 2 were tagged. What is the estimated amount of tagged sharks?

  12. Convert using dimensional analysis. U.S. speed limits are posted in miles per hour. Germany’s Autobahn has stretches where speed limits are posted at 130 kilometers per hour. How many miles per hour is 130 km/h?

  13. Solve using a proportion. A CD is on sale for 15% off its normal price if $13.95. What is its sale price? Write a direct variation equation to solve this problem.

  14. Solve using a proportion. 18 is what % of 32?

  15. Solve using a proportion. • A biologist tagged 250 fish. After collecting another sample, he found 5 tagged fish. If the population of the fish in the lake is 3750 fish, how many fish were in the second sample of fish?

  16. Convert using dimensional anlaysis. In 2001, Alan Webb broke Jim Ryun’s 36 year old high school mile record by running 1 mile in 3 minutes 53.43 seconds. How fast was this in feet per second?

  17. Solve using a proportion. What is 18% of 15?

  18. Convert using dimensional analysis. • Super Chicken has the ability to lay eggs at a constant rate. She can lay 10 eggs every 20 seconds. What would be her rate based on 1 dozen eggs/hr?

  19. Solve using a proportion. A 13thCentruy Chinese manuscript contains this problem: You are sold 1,534 shih of rice but find that millet is mixed with the rice. In a sample of 254 grains, you find 28 grains of millet. About how many shih are actually millet?

  20. Convert using dimensional analysis. • Mr. Malcolm is planning a trip to California. If he travels 3281 miles from start to finish, how far will he travel in km? (1 km=1.6 miles)

More Related