1 / 10

Exploring Ratio

Exploring Ratio. The ratio of boys to girls in Ms. Johnson’s class is 3 to 2. How many boys might there be in the class? How many girls might there be?. The Answer.

verne
Download Presentation

Exploring Ratio

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. Exploring Ratio The ratio of boys to girls in Ms. Johnson’s class is 3 to 2. How many boys might there be in the class? How many girls might there be?

  2. The Answer If Mrs. Johnson has a very small class, there could be 3 boys and 2 girls in the class. However, this is not likely. She may have 5 groups of 3 boys and 5 groups of 2 girls. This would be a total of 15 + 10 which equals a class of 25. What about 3 groups of 3 boys and 3 groups of 2 girls? Is this a possibility for a class?

  3. Words to Know This can also be written as 3:4 3 is to 4 3 green for every 4 yellow or 3 / 4. Ratio: a comparison of two quantities. The ratio of green happy faces to yellow happy faces is … 3 to 4.

  4. Making Punch 3 L Orange Juice 2 L Pineapple Juice 6 L Ginger Ale In the fruit punch, what is the ratio of orange juice to pineapple juice? What is the ratio of juice to ginger ale? What is the ratio of orange juice to mixed punch? What does each ratio describe? 6:3 2 to 3 2:1 5:11 6/11

  5. The Answers Ratio of orange juice to orange juice is 3 to 2. Ratio of both juices to ginger ale is 5 to 6. Ratio of orange juice to punch is 3 to 11. The ratio 6:3 describes the amount of ginger ale compared to the amount of orange juice. The ratio 2 to 3 describes the amount of pineapple juice to orange juice. The ratio 2 to 1 describes the amount of ginger ale compared to orange juice. Notice that there is twice as much ginger ale as o.j. The ratio 5:11 describes the amount of juice compared to punch. The ratio 6/11 describes the amount of ginger ale compared to punch.

  6. 3-BEAN SALAD RECIPE 2 Cans Green Beans 1 Can Kidney Beans 1 Can Lima Beans Mix beans in a bowl. Add oil and vinegar dressing. Makes one bowl of salad. What is the ratio of green beans to kidney beans in the salad? What is the ratio of kidney beans to lima beans? What other ratios can you write to describe the salad? How many cans of each bean would you need to make 8 bowls of salad? 12 bowls of salad?

  7. The Answers The ratio of green beans to kidney beans in the salad is 2 to 1. The ratio of kidney beans to lima beans is 1 to 1. Other ratios that can be used to describe the salad are 2 to 4 (green beans to prepared salad) 1 to 2 (kidney or lima beans to green beans) What does the ratio 8 to 4 describe? The ratio 8:4 describes the amount of green beans compared to kidney beans or lima beans if you quadrupled (times by 4) the ingredients.

  8. The original recipe makes 4 bowls of bean salad. In order to prepare 8 bowls of salad, you would have to double the ingredients. Therefore, you would need 4 cans of green beans, 2 cans of kidney beans, and 2 cans of lima beans. To make 12 bowls, you would need 6 cans of green beans, and 3 each of kidney and lima beans. (triple the bowls requires triple the ingredients.

  9. What is the ratio of prisms to pyramids? What is the ratio of pyramids to prisms? What is the ratio of prisms to total polyhedra? In a set of 28 polyhedra, how many prisms and how many pyramids would there be if this same ratio existed? • pol·y·he·dron • n.pl.pol·y·he·drons or pol·y·he·dra (-dr ) • A solid bounded by polygons.

  10. The Answers The ratio of prisms to pyramids is 4 to 3. The ratio of pyramids to prisms is 3 to 4. The ratio of prisms to polyhedra is 4 to 7. A set of 28 polyhedra is 4 times larger than the original set. Therefore, the number of prisms in the original set (4) and the number of pyramids in the original set (3) must be quadrupled. This means there would be 16 prisms and 12 pyramids in the set of 28.

More Related