Grade 6 Mathematics · Unit 3: Ratios & RatesStandard 6.AT.3c

Lesson 3.103.10 Small Group · Group 2

Group 2 · Set BSecond challenge form · new problems, same idea

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Learning target I can convert measurement units using ratios and conversion factors, explain why the method works, and use it on a problem I have not seen before.

Remember3.10 Small Group · Group 2

Before you convert, compare the unit sizes. Multiply for a smaller unit, divide for a larger unit, and use two steps when needed. Some conversions need two conversion factors. Convert one step at a time.

Words: Conversion Factor (Factor de conversión)Unit (Unidad)Equivalent (Equivalente)Ratio (Razón)Customary units (Unidades usuales (sistema inglés))

  1. 1Complete each step, then write the final answer.
    YardsFeet________________

    A hallway is 15 feet long. There are 3 feet in 1 yard. How many yards long is the hallway?

    Show your work
    Final answer:
  2. 2Complete each step, then write the final answer.
    YardsFeetInches________________

    A ribbon is 8 yards long. How many inches long is it? Use 1 yard = 3 feet and 1 foot = 12 inches.

    Show your work
    Final answer:
  3. 3Complete each step, then write the final answer.
    HoursMinutesSeconds________________

    A soccer game lasts 2 hours. How many seconds is that? Use 1 hour = 60 minutes and 1 minute = 60 seconds.

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    Final answer:
  4. 4Complete each step, then write the final answer.
    QuartsCups________________

    Each batch of soup needs 3 cups of milk. You have 1 gallon of milk. Use 1 gallon = 4 quarts and 1 quart = 4 cups. How many full batches can you make?

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    Final answer:

Explain your thinkingDee used only one conversion factor. How do you know when a conversion needs two steps?

How did it go? ☐ 4 · I can teach it☐ 3 · I've got it☐ 2 · I need a hint☐ 1 · I need help