ClassReady

1st Grade · Math

1st Grade Measurement Worksheets

First graders measure by comparing and by using simple tools: longer, shorter, how many cubes long, then inches and centimeters. These free printable 1st grade measurement worksheets cover comparing and ordering lengths, nonstandard measurement with paperclips and cubes, and beginning ruler use. Every worksheet includes a printable answer key and easy, standard, and challenge versions for differentiation.

Reviewed by ClassReady Editorial Team Last updated August 2026

Before this skill

  • Comparing sizes of objects
  • Counting to 20
  • One-to-one correspondence

Common mistakes to watch for

  • Leaving gaps or overlapping units when measuring with paperclips
  • Starting the ruler at 1 instead of 0
  • Calling the longer object 'bigger' without a comparison word
Filter:

Related Skills

Addition Comparing Numbers Counting Data & Graphs Fact Families Fractions Geometry Money Place Value Skip Counting Subtraction Telling Time Word Problems

Frequently Asked Questions

What measurement skills do 1st graders learn?

First graders compare and order three objects by length, measure length with nonstandard units, and express length as a whole number of units using a ruler.

Why use paperclips before a ruler?

Nonstandard units teach the core idea — measuring is counting units laid end to end — before the abstraction of inches and centimeters on a ruler.

Are these measurement worksheets free and printable?

Yes. Every worksheet is a free, printable PDF with an answer key, and no sign-up is required.