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Grade 3 · Math · Measurement

3rd Grade Measure Length With a Ruler worksheets

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Measure Length With a Ruler

Grade 3 Math Worksheet

NameDate

Write the length of each bar in inches.

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3rd Grade Measure Length With a Ruler worksheet 1 – printable PDF
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About this worksheet

Measuring with a ruler means lining up the end of an object with zero and reading the number at its other end. Third graders measure to the nearest half inch and quarter inch, which means reading the small marks between the whole numbers. On this worksheet your child looks at nine bars lying above an inch ruler and writes the length of each one in inches.

Building Confidence uses whole and half inches such as 4 1/2, On Level uses any quarter inch, and Challenge Me uses the odd quarters such as 2 3/4. Ask your child to check that the bar begins at zero and to count the small marks past the last whole number, remembering that two marks make a half and four marks make a whole.

What your child will learn

  • Line up the end of an object with zero on a ruler
  • Read whole, half and quarter inches
  • Write a length in inches

Common Core standard: 3.MD.B.4

Worked example

A bar that stops halfway between the 4 and the 5 is 4 1/2 inches long.

Common mistake

Counting the marks on the ruler instead of reading the number at the end of the bar.

Helpful hint

Start at zero. Read the whole number, then the small marks after it.

Questions parents ask

What is the most common mistake with measure length with a ruler?

Counting the marks on the ruler instead of reading the number at the end of the bar.

How can I help my child with measure length with a ruler?

Start at zero. Read the whole number, then the small marks after it.

Are these 3rd grade math worksheets free to print?

Yes. All 6 printable versions on this page are free to download and print, with no account needed.

Similar: Area Concepts · Perimeter Word Problems

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