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Converting units of measure

Grade 4 · Math · Free lesson

Hi there! I am Studyfin, your learning buddy. Today, we will explore how to change bigger units of measurement into smaller ones!

Sometimes we need to change how we measure things. Imagine a story character named Joy who wants to build a dog house. Joy has a long board that is 3 yards long, but her building plan is written in feet. To solve her problem, Joy must convert her yards into feet.

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To change a larger unit to a smaller unit, we multiply. One yard is equal to 3 feet. Let us watch how 1 yard grows into 3 feet!

1 Yard1 Foot1 Foot1 Foot1 Yard = 3 Feet

Let us analyze how Joy changes as she solves her math problem. At first, she feels confused by the different units. But as she learns to multiply by 3, her confidence grows, and she successfully builds her dog house!

Joy changes from confused to confident!
✏️ Worked example

Joy has a board that is 4 yards long. She needs to know how many feet long the board is. Help Joy convert 4 yards into feet.

  1. Identify the starting unit, which is yards, and the target unit, which is feet.
  2. Recall the conversion rule: 1 yard is equal to exactly 3 feet.
  3. Multiply the number of yards by 3 to find the total number of feet.
  4. Write out the math: 4 yards times 3 feet per yard equals 12 feet.
  5. Joy now knows her board is 12 feet long and feels excited to start building!
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