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Perimeter of Bigger Rectangles is a free printable Grade 3 math worksheet on perimeter with larger side lengths, aligned to Common Core standard 3.MD.D.8. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 14 of 25 · the same problems every time you open this link.

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One paper per student

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Perimeter of Bigger Rectangles

3.MD.D.8

NameDate

Work out the perimeter.

1.
Sides 19 and 24. Perimeter =
2.
Sides 12 and 14. Perimeter =
3.
Sides 21 and 24. Perimeter =
4.
Sides 19 and 12. Perimeter =
5.
Sides 15 and 15. Perimeter =
6.
Sides 19 and 22. Perimeter =
7.
Sides 14 and 18. Perimeter =
8.
Sides 21 and 21. Perimeter =

LessonPrint · 3.MD.D.8 · Set 14 · free to copy for classroom use

Answer key — Perimeter of Bigger Rectangles

Set 14. Prints on its own sheet.

  1. 1.86 units
  2. 2.52 units
  3. 3.90 units
  4. 4.62 units
  5. 5.60 units
  6. 6.82 units
  7. 7.64 units
  8. 8.84 units

More practice for 3.MD.D.8

Find the distance around a shape.

Teaching this next? Perimeter of Polygons is the 45-minute plan for it, with the misconceptions to expect.

All Grade 3 worksheets

Last reviewed 2026-09-05. Aligned to 3.MD.D.8 of the Common Core State Standards for Mathematics.