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Transparency 2. Click the mouse button or press the Space Bar to display the answers. Splash Screen. Example 2-4c. Objective. Determine unit rates. Example 2-4c. Vocabulary. Rate. A ratio that compares two quantities with different kinds of units. Example 2-4c. Vocabulary. Unit rate.

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  1. Transparency 2 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 2-4c Objective Determine unit rates

  4. Example 2-4c Vocabulary Rate A ratio that compares two quantities with different kinds of units

  5. Example 2-4c Vocabulary Unit rate When a rate is simplified so that it has a denominator of 1 unit

  6. Lesson 2 Contents Example 1Find a Unit Rate Example 2Find Unit Rates Example 3Find Unit Rates Example 4Choose the Best Buy

  7. Example 2-1a READINGJulia read 52 pages in 2 hours. What is the average number of pages she read per hour? Write the rate as a fraction Notice: Time is in the denominator  2 Divide the numerator by the denominator  2 Unit Rate always has a denominator of 1 Answer: 1/4

  8. Example 2-1b SKATINGKyle skated 16 laps around the ice rink in 4 minutes. What is the average number of laps he skated per minute? 4 laps Answer: 1 minute 1/4

  9. Example 2-2a Write 440 miles in 8 hours as a unit rate in miles per hour. Write the rate as a fraction. Notice: Time is in the denominator  8 Divide the numerator by the denominator  8 Answer: 2/4

  10. Example 2-2d Write 455 miles in 7 hours as a unit rate in miles per hour. 65 miles Answer: 1 hour 2/4

  11. Example 2-3a Find the unit price per can if it costs $3 for 6 cans of soda. Since it is money, round to the nearest hundredth if necessary. Write the rate as a fraction. Notice: Money is in the numerator  6 Divide the numerator by the denominator  6 Answer: 3/4

  12. Example 2-3b Find the unit price per cookie if it costs $3 for one dozen cookies. Round to the nearest hundredth if necessary. $0.25 Answer: 1 cookie 3/4

  13. Example 2-4a The costs of different sizes of orange juice are shown in the table. Which container costs the least per ounce? cost ounce Must find the unit rate of each item $1.28 Remember: Money is always in the numerator 16 oz $0.08 Write the rate as a fraction. 1 oz Divide the numerator by the denominator 4/4

  14. Example 2-4a 16 oz = $0.08 cost ounce Must find the unit rate of each item $1.92 Remember: Money is always in the numerator 32 oz $0.06 Write the rate as a fraction. 1 oz Divide the numerator by the denominator 4/4

  15. Example 2-4a 16 oz = $0.08 32 oz = $0.06 cost ounce Must find the unit rate of each item $2.56 Remember: Money is always in the numerator 64 oz $0.04 Write the rate as a fraction. 1 oz Divide the numerator by the denominator 4/4

  16. Example 2-4a 16 oz = $0.08 32 oz = $0.06 64 oz = $0.04 cost ounce Must find the unit rate of each item $4.80 Remember: Money is always in the numerator 96 oz $0.05 Write the rate as a fraction. 1 oz Divide the numerator by the denominator 4/4

  17. Example 2-4a 16 oz = $0.08 32 oz = $0.06 64 oz = $0.04 96 oz = $0.05 Which container costs the least per ounce? Compare the cost per ounce of each size and identify the smallest price Answer based on what the question is asking Answer:The 64-ounce container 4/4

  18. Example 2-4c * The costs of different sizes of bottles of laundry detergent are shown below. Which bottle costs the least per ounce? Answer:64-ounce bottle 4/4

  19. End of Lesson 2 Assignment

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