4th grade area & perimeter worksheets

Area and perimeter worksheets for fourth grade work the same labeled rectangles with bigger sides, and both questions in the mix, so your child has to read which measure is asked before reaching for a formula.

Free printable PDF worksheet, aligned to Common Core 4.MD.A.3.

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The kind of problems you'll get

Find the area or perimeter. Show your work.

  1. Find the area.

    Answer: 70

  2. Find the perimeter.
  3. Find the area.

Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.

What's on each sheet

Every version prints on US Letter or A4, with its answer key on the last page.

How to teach this

The trap at this level is answering the wrong question, not the arithmetic. Have your child underline "area" or "perimeter" in each problem before computing, then check one answer by the other method. Plugging the sides back in takes ten seconds and catches swapped formulas.

Watch for: Kids mix up the two measures. Perimeter adds the walk around the edge; area multiplies to fill the inside. Kids multiply for perimeter out of habit. A rectangle's perimeter is 2 × (length + width), an adding recipe, not length × width.

Common questions about area & perimeter

What units do the answers use?
Area is in square units (like sq cm); perimeter is in plain units (cm). Writing the unit is the fastest way to notice the wrong formula.
Are both kinds of questions on one sheet?
Yes, area and perimeter prompts mix, on purpose. Reading which one is asked is half the skill at this grade.

Related worksheets

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Aligned to Common Core 4.MD.A.3. Reviewed by the One more sheet curriculum team. Content version 123, updated July 2026.