4th grade area & perimeter worksheets

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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.

Each print is a different sheet with its own answer key. You don't need to sign up.

The kind of problems you'll get

Find each requested measurement. Show your work and include units.

  1. Rectangle: length 8 cm; width 3 cm.

    Answer: Area: 8 × 3 = 24 cm². Perimeter: 8 + 3 + 8 + 3 = 22 cm.

Most problems on this sheet sit beside a picture, model or diagram, so this is the worked example the sheet itself prints. The answer key on page two prints the answer under every problem.

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 a 4th grade sheet

The sample sheet above has 8 problems. This sheet is aligned to 4.MD.A.3. The 3rd grade sheet is aligned to 3.MD.C.7, 3.MD.D.8.

Every version prints on US Letter or A4, with its answer key after the problems.

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 4th grade 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.

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Aligned to Common Core 4.MD.A.3. Reviewed by the One more sheet team. Content version 240, updated September 2026.

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