In this Grade 4 math worksheet, students practice perimeter for pentagons, hexagons, and irregular shapes by adding side lengths or multiplying when sides are equal. They fix sentences about regular polygons, fill in blanks for shapes with sides 4 cm, 5 cm, and mixed lengths, and write short answers explaining how to handle five different sides. Learners label perimeter with length units, not square units, throughout each Grade 4 problem.
Style:
Area and Perimeter (Advanced)
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
A regular pentagon with each side measuring 4 cm have a perimeter of 20 cm.
Rewrite: A regular pentagon with each side measuring 4 cm has a perimeter of 20 cm.
2. Fix the sentence:
To find perimeter of an irregular shape, you adds every side length together.
Rewrite: To find the perimeter of an irregular shape, you add every side length together.
3. Fix the sentence:
The hexagons sides was each 5 inches long, giving a perimeter of 30 inches.
Rewrite: The hexagon's sides were each 5 inches long, giving a perimeter of 30 inches.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A regular pentagon has 5 equal sides of 4 cm, so its perimeter is 20 cm.
2. A regular hexagon has 6 equal sides that we add to find perimeter.
3. An irregular shape with sides 3, 4, 5, and 6 cm has a perimeter of 18 cm.
4. Perimeter is measured in length units like inches, feet, or centimeters.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. Describe how to find the perimeter of an irregular shape with five different side lengths.
I list every side length first so I do not miss any. Then I add all five numbers together using column addition. The total sum is the perimeter, and I label it with the correct length unit, such as cm or inches, in my Grade 4 answer.
2. How can you use multiplication to find the perimeter of a regular hexagon?
A regular hexagon has six equal sides. Instead of adding the same number six times, I multiply one side by 6. For example, if a side is 7 cm, I find 7 x 6, which equals 42 cm. Multiplication is faster than repeated addition.
Area and Perimeter (Advanced)
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
A regular pentagon with each side measuring 4 cm have a perimeter of 20 cm.
Rewrite: A regular pentagon with each side measuring 4 cm has a perimeter of 20 cm.
2) Fix the sentence:
To find perimeter of an irregular shape, you adds every side length together.
Rewrite: To find the perimeter of an irregular shape, you add every side length together.
3) Fix the sentence:
The hexagons sides was each 5 inches long, giving a perimeter of 30 inches.
Rewrite: The hexagon's sides were each 5 inches long, giving a perimeter of 30 inches.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) A regular pentagon has 5 equal sides of 4 cm, so its perimeter is 20 cm.
2) A regular hexagon has 6 equal sides that we add to find perimeter.
3) An irregular shape with sides 3, 4, 5, and 6 cm has a perimeter of 18 cm.
4) Perimeter is measured in length units like inches, feet, or centimeters.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) Describe how to find the perimeter of an irregular shape with five different side lengths.
I list every side length first so I do not miss any. Then I add all five numbers together using column addition. The total sum is the perimeter, and I label it with the correct length unit, such as cm or inches, in my Grade 4 answer.
2) How can you use multiplication to find the perimeter of a regular hexagon?
A regular hexagon has six equal sides. Instead of adding the same number six times, I multiply one side by 6. For example, if a side is 7 cm, I find 7 x 6, which equals 42 cm. Multiplication is faster than repeated addition.
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9 Questions
15-20 minutes
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