Rounding Whole Numbers (Number Line)


Place points on a number line. Round these values to the nearest ten or hundred. Visualize rounding by showing the number line as a hill or series of hills. These hills cause the points to roll to the nearest valley (nearest multiple of ten or one hundred).

Screenshot of Rounding Whole Numbers (Number Line) Gizmo

LESSON MATERIALS:

LEARNING OBJECTIVES:

  • Round a given number to the nearest ten and/or nearest hundred.
  • Given a rounded number, determine what the original value could have been.
  • For a given number, name the two multiples of ten and/or the two multiples of one hundred that it falls between.

VOCABULARY:

  • midpoint, multiple, round, whole number

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User Recommendations (6):

  • avatar
    Great for the visual learners!

    Recommended For:  4th Grade Math

    By: Gizmo User from Georgia

  • avatar
    Love this Gizmo! I use the first two pages at first for rounding to the nearest 10, and then follow with nearest 100. The kids love it!

    Recommended For:  3rd Grade Math

    By: Gizmo User from Texas

  • avatar
    Have you worked with Gizmos? This is great for rounding.

    Recommended For:  3rd Grade Math

    By: Gizmo User from Texas

  • avatar
    So simple! Wish I had thought of this concept when I first started teaching. Students retain the visualization when working without computer

    Recommended For:  3rd Grade, 4th Grade, 5th Grade Math

    By: Gizmo User from Ontario

  • avatar
    can help in rounding decimals

    Recommended For:  5th Grade Math

    By: Gizmo User from Ash Sharqīyah

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