Math Grade 2-3

Measuring Length: Inches and Centimeters

Practice choosing units, reading rulers, and comparing lengths

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Practice choosing units, reading rulers, and comparing lengths

Math - Grade 2-3

Instructions: Read each problem carefully. Use a ruler when needed. Show your work in the space provided.
  1. 1

    A pencil is 7 inches long. Write the length of the pencil using a number and a unit.

  2. 2
    A crayon next to a small ruler with tick marks.

    A crayon measures 9 centimeters long. Is centimeters a good unit to measure a crayon? Explain.

  3. 3
    A paper clip lined up on a ruler from the start tick to a later tick.

    Look at the ruler. The paper clip starts at 0 centimeters and ends at 4 centimeters. How long is the paper clip?

  4. 4
    A tall classroom door beside a child holding a small ruler.

    Which unit would you use to measure the length of a classroom door: inches or centimeters? Explain your choice.

  5. 5
    A toy truck longer than a toy car, each shown with a measuring strip.

    A toy car is 5 inches long. A toy truck is 8 inches long. Which toy is longer, and how much longer is it?

  6. 6
    A marker lined up on a ruler from one tick mark to another.

    Look at the ruler. The marker starts at 1 inch and ends at 6 inches. How long is the marker?

  7. 7
    Two measuring sticks with the same number of intervals but different lengths.

    Circle the shorter length: 12 centimeters or 12 inches. Explain how you know.

  8. 8
    A ribbon with a small cut-off piece separated from the remaining ribbon.

    A ribbon is 10 centimeters long. You cut off 3 centimeters. How many centimeters of ribbon are left?

  9. 9
    A line segment lined up on a ruler from the start tick to a later tick.

    Look at the line segment. It begins at 0 centimeters and ends at 6 centimeters. What is the length of the line segment?

  10. 10
    A toothbrush beside a small ruler and a much taller measuring stick.

    Choose the best estimate for the length of a toothbrush: 7 inches or 7 feet. Explain your answer.

  11. 11
    A book standing taller than a notebook with measuring strips beside them.

    A book is 11 inches tall. A notebook is 9 inches tall. How much taller is the book than the notebook?

  12. 12
    Two colored strips placed end to end above a ruler with tick marks.

    Look at the two strips. Strip A is 8 centimeters long. Strip B is 5 centimeters long. What is their total length if they are placed end to end?

  13. 13
    An eraser being measured with a ruler.

    Measure a real eraser with a ruler. Write its length in centimeters. If you do not have an eraser, use an object about the same size.

  14. 14
    A bug lined up on a ruler between two tick marks.

    Look at the bug on the ruler. It starts at 2 centimeters and ends at 7 centimeters. How long is the bug?

  15. 15
    A spoon measured by two rulers with different tick spacing.

    Mia measured a spoon as 15 centimeters long. Leo measured the same spoon as 6 inches long. Can both measurements be reasonable? Explain.

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