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Choose the Best Unit of Length Worksheets for 2nd Grade

Pick the best unit, inches, feet, yards, centimeters, or meters, to measure a thing. 15 free printable worksheets, each with an answer key.

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Free Choose the Best Unit of Length Worksheets

Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.

Choose the Best Unit of Length: what children learn

Choosing a unit means thinking about how big the object is: inches and centimeters for small things, and feet, yards, and meters for big things. Practice builds a feel for real sizes.

Choose the Best Unit of Length: worked example

Best unit for a pencil: inches or feet? inches

A pencil is short, so a small unit like inches works best.

Choose the Best Unit of Length: a common mistake to watch for

Kids sometimes pick the bigger unit, like feet, for a small thing.

Choose the Best Unit of Length: how to help at home or in class

Write a few household things on slips of paper, such as a fingernail, a sofa and the hallway, and let your child sort them under cards labeled inches, feet and yards. Ask which tool they would reach for: a small ruler, a yardstick or a long tape. When your child explains each choice by how big the object really is, move on to estimating actual lengths.

What is on these Choose the Best Unit of Length worksheets

This set has 15 different worksheets for 2nd grade, with 8 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Write the best unit to measure each thing.”

Example questions like the ones on these worksheets, with their answers:

  • Best unit for a stamp: centimeters or meters?centimeters
  • Best unit for a swimming pool: inches or yards?yards
  • Best unit for the height of a flagpole: feet or inches?feet
  • Best unit for a school bus: centimeters or meters?meters
  • Best unit for a marker: inches or feet?inches
  • Best unit for a key: feet or inches?inches
  • Best unit for a driveway: inches or feet?feet
  • Best unit for a soccer field: yards or inches?yards

Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers

Related Measurement worksheets for 2nd grade

Measure Lengths in Inches
Read the length of a bar using a ruler marked in inches, from 1 to 12.
Measure Lengths in Centimeters
Read the length of a bar using a ruler marked in centimeters, from 1 to 30.
Compare Lengths by Measuring
Measure two bars with rulers, then compare their lengths with <, >, or =.
How Much Longer? (Length Difference)
Measure two bars, then subtract to find how much longer or shorter one is.
Estimate Lengths
Choose the best estimate for the length of a real object.
All Measurement worksheets
See every measurement topic for 2nd grade