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Ratios

Ratios. Unit Rate Similar Shapes Solving Proportions. Unit Rate: The cost per unit Write unit rate as a fraction, then divide. Example: Paying $2.49 for a 12 oz bag of chips Example: Driving 230 miles on 9 gallons of gas Example: Getting 6 apples for $1.80.

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Ratios

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  1. Ratios Unit Rate Similar Shapes Solving Proportions

  2. Unit Rate: The cost per unit • Write unit rate as a fraction, then divide. Example: Paying $2.49 for a 12 oz bag of chips Example: Driving 230 miles on 9 gallons of gas Example: Getting 6 apples for $1.80

  3. Directions: Find the unit rate. Which is the better buy? 12 oz can of soda for .50 32 oz soft drink for 1.09

  4. Directions: Find the unit rate. Which is the better buy? $0.75 for three doughnuts $2.00 for 7 doughnuts

  5. Directions: Find the unit rate. Which is the better vehicle? 240 miles on 10 gallons 340 miles on 15.5 gallons

  6. Directions: Are the two fractions proportional?

  7. Directions: Are the two fractions proportional?

  8. Directions: Which two fractions are proportional?

  9. Proportions:

  10. Proportions:

  11. The classroom ratio of boys to girls is 3:2. If there are 12 boys in the class, then how many girls are there?

  12. Similar question…just a little different: The classroom ratio of boys to girls is 3:2. If there are 30 kids in the class, then how many are boys?

  13. Homework: Pg 348 11-18 Pg 358 15-28 Must copy problem, must show the ratio (if possible). MUST SHOW STEPS Please do this as neatly as possible! Organized homework usually means better results.

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