1. OBJECTIVE: How do we find rates and unit rates?
Do Now
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2. Anticipatory Set
We have all seen the Trident commercials that tell us that
4 out of every 5 dentist recommend Trident to their
patients. What does that mean?
Did they only survey 5 dentists?
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3. Ratio: a comparison of two quantities by division.
Rate: A ratio that compares two quantities measured in
different units.
Example: A person drove 75 miles in 3 hours.
Unit Rate: A rate where the second quantity is one unit.
Example: A person drove at a rate of 25 miles per 1 hour.
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4. 1.) A landscaper plants 28 bushes and 4 trees.
Rate:___________ Unit Rate:____________
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5. 2.) A class trip consists of 36 students and 6 teachers.
Rate:___________ Unit Rate:____________
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6. 3.) Gabrielle bikes 78 miles in 6 hours.
Rate:___________ Unit Rate:____________
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7. 4.) A car travels 330 miles in 8 hours.
Rate:___________ Unit Rate:____________
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8. 5.) A recipe for a garden weed killer involves mixing 11
tablespoons of liquid soap with 2 quarts of water.
Rate:___________ Unit Rate:____________
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9. 6.) Pete added 12 ounces of chocolate chips to a recipe that
yielded 48 cookies.
Rate:___________ Unit Rate:____________
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10. 7.) Jane added 21 ounces of chocolate chips to a
recipe that yielded 60 cookies.
Rate:___________ Unit Rate:____________
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11. QUESTION: Whose cookies had more
chocolate chips per cookie?
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12. Before You Leave
The Yankees have won 22 of their first 33 games. Write the
following ratios:
a.) Wins to losses
b.) Wins to games played
c.) Losses to games played
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13. Mr. Tjersland's Math 7
Homework: Pages 262-263 #1-4 all, 6-12 all, 18-25 all
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