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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 16 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 13 and 18. Perimeter =
2.
Sides 18 and 22. Perimeter =
3.
Sides 19 and 12. Perimeter =
4.
Sides 24 and 23. Perimeter =
5.
Sides 12 and 21. Perimeter =
6.
Sides 22 and 17. Perimeter =
7.
Sides 12 and 16. Perimeter =
8.
Sides 24 and 12. Perimeter =

LessonPrint · 3.MD.D.8 · Set 16 · free to copy for classroom use

Answer key — Perimeter of Bigger Rectangles

Set 16. Prints on its own sheet.

  1. 1.62 units
  2. 2.80 units
  3. 3.62 units
  4. 4.94 units
  5. 5.66 units
  6. 6.78 units
  7. 7.56 units
  8. 8.72 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.