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Math Grade 2-3 Answer Key

Math: Measuring Length

Using standard units to measure and compare objects

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Math: Measuring Length

Using standard units to measure and compare objects

Math - Grade 2-3

Instructions: Read each problem carefully. Measure or solve each one. Show your work in the space provided.
  1. 1

    A crayon is 4 inches long. A pencil is 7 inches long. How many inches longer is the pencil than the crayon?

    Find the difference between 7 and 4.

    The pencil is 3 inches longer than the crayon because 7 - 4 = 3.
  2. 2

    A ribbon is 12 inches long. How many feet is that?

    The ribbon is 1 foot long because 12 inches equals 1 foot.
  3. 3

    A table is 3 feet long. A bookshelf is 5 feet long. Which object is longer?

    Compare the numbers 3 and 5.

    The bookshelf is longer because 5 feet is greater than 3 feet.
  4. 4

    A bug crawls 6 centimeters. Then it crawls 2 more centimeters. How far did it crawl in all?

    The bug crawled 8 centimeters in all because 6 + 2 = 8.
  5. 5

    A rope is 9 meters long. Another rope is 4 meters long. How many meters longer is the first rope?

    Subtract 4 from 9.

    The first rope is 5 meters longer because 9 - 4 = 5.
  6. 6

    Which is longer: 10 centimeters or 8 centimeters?

    10 centimeters is longer because 10 is greater than 8.
  7. 7

    A notebook is 11 inches long. A folder is 9 inches long. Which one is shorter?

    Look for the smaller length.

    The folder is shorter because 9 inches is less than 11 inches.
  8. 8

    A room rug is 2 meters long. Another rug is 7 meters long. How many meters long are the two rugs together?

    The two rugs are 9 meters long together because 2 + 7 = 9.
  9. 9

    A stick measures 15 centimeters. If it is cut into two pieces, one piece is 6 centimeters long. How long is the other piece?

    Subtract the length of one piece from the whole stick.

    The other piece is 9 centimeters long because 15 - 6 = 9.
  10. 10

    Circle the best unit to measure the length of a shoe: inches, feet, or meters.

    Inches are the best unit to measure the length of a shoe because a shoe is a small object.
  11. 11

    Circle the best unit to measure the length of a classroom: centimeters, meters, or inches.

    Choose the unit used for bigger lengths.

    Meters are the best unit to measure the length of a classroom because a classroom is a large space.
  12. 12

    A toy car is 5 inches long. Another toy car is 5 inches long. Compare their lengths.

    The two toy cars are the same length because both are 5 inches long.
  13. 13

    A scarf is 14 inches long. How many more inches does it need to be 18 inches long?

    Find the difference between 18 and 14.

    The scarf needs 4 more inches because 18 - 14 = 4.
  14. 14

    A plant grows from 8 centimeters tall to 13 centimeters tall. How much did it grow?

    The plant grew 5 centimeters because 13 - 8 = 5.
  15. 15

    A board is 1 foot long. How many inches long is it?

    Remember how many inches are in 1 foot.

    The board is 12 inches long because 1 foot equals 12 inches.
LivePhysics.com Math - Grade 2-3 - Answer Key