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Homework: Worksheet

Homework: Worksheet. Do Now: 5/13/14 It takes 3 lemons to make 2 glasses of lemonade. How many lemons does it take to make 8 glasses of lemonade? How many glasses of lemonade can be made from 21 lemons? How many lemons does it take to make 29 glasses of lemonade?

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Homework: Worksheet

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  1. Homework: Worksheet Do Now: 5/13/14 It takes 3 lemons to make 2 glasses of lemonade. • How many lemons does it take to make 8 glasses of lemonade? • How many glasses of lemonade can be made from 21 lemons? • How many lemons does it take to make 29 glasses of lemonade? • How many glasses of lemonade can be made from 1 lemon? 12 lemons 14 glasses 43.5 lemons 2/3 of a glass

  2. Homework Check (reteach) • 1 to 8, 1:8, 1/8 • 4 to 1, 4:1, 4/1 • 1 to 4, 1:4, 1/4 • 1 to 3, 1:3, 1/3 • 3 to 8, 3:8, 3/8 • 8 to 4, 8:4, 8/4 (or 2:1) • 16 to 30, 16:30, 16/30 • SAMPLES: 9 to 17 (cats to dogs), 9 to 26 (cats to total), 17 to 26 (dogs to total)

  3. Homework Check (practice) • 2 to 1, 2:1, 2/1 • 1 to 1, 1:1, 1/1 • 2 to 4, 2:4, 2/4 (or 1:2) • #1 and #2 are part to part comparisons; #3 is part to whole • 12 to 2, 12:2, 12/2 (or 6:1) • 10 to 41, 10:41, 10/41 • D (45:245) • Steve is incorrect because the numbers in ratios describe different quantities, so it matters which order they are in.

  4. Unit Learning Goal: Use ratios to represent quantitative relationships.

  5. Classwork • The co-ed soccer team has four times as many boys on it as it has girls. We say the ratio of the number of boys to the number of girls on the team is 4:1. We read this as “four to one.”

  6. We could have 4 boys and 1 girl on the team for a total of 5 players. Is this big enough for a team? What are some other options that show four times as many boys as girls on the team? *bar model

  7. Suppose the ratio of number of boys to number of girls on the team is 3:2. What are some other options that show that there are three boys for every two girls on the team? We can’t say there are 3 times as many boys as girls. What would our multiplicative value have to be? There are ______ as many boys as girls. *bar model

  8. Our class ratios… • Number of boys to number of girls • Number of teachers to number of students • Number of students wearing red shirts to number of students wearing blue shirts • Number of students wearing shorts to number of students wearing pants • Make one of your own 

  9. With a partner… Write ratios in words to describe the given comparisons: • 1 to 12 • 2:5 • 16 to 1 • 3/4

  10. Describe a ratio relationship, in the context of this survey, for which the ratio is 3:5.

  11. Are the ratios 2:5 and 5:2 the same? Why or why not?

  12. Use a bar model to support each answer. • In a bag of trail mix, the ratio of walnuts to raisins is 5 to 6. If there are 54 raisins in the mix, how many walnuts are there? • The ratio of days off to days in school is 2 to 5. How many days are we off if we are in school for 25 days? • Bill has three times as much money as Jill. If they have $48 in total, how much does each person have?

  13. Finding the parts In August, 192 people registered either a car or a truck at the local DMV. For every 5 cars, 7 trucks registered. How many of each type of vehicle were registered in August?

  14. Finding the parts • In September, the DMV finds that for every 14 non-commercial vehicles, there were 5 commercial vehicles on the highways. If there were 108 more non-commercial vehicles than commercial vehicles, how many of each type of vehicle were on the highways in September?

  15. Homework • Worksheet • Ratio Problems • 2 sides • Show bar model for each answer

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