Designed for Grade 5 students, this worksheet reinforces square area, polygon perimeter, and mixed-unit conversions through everyday objects like rugs, posters, octagonal tables, and boards. Sentence corrections expose common unit and formula errors, while fill-in items rehearse careful foot-to-inch and meter-to-centimeter conversions step by step. Short-answer questions then push Grade 5 learners to combine perimeter calculations with unit changes, building confidence in multi-step measurement reasoning.
Style:
Perimeter, Area, and Surface Area
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
A square rug with side 10 ft has perimeter 100 ft.
Rewrite: A square rug with side 10 ft has perimeter 40 ft.
2. Fix the sentence:
A side of 3 m equals 30 cm.
Rewrite: A side of 3 m equals 300 cm.
3. Fix the sentence:
The perimeter of a triangle with sides 7, 9, and 11 in is 27 sq in.
Rewrite: The perimeter of a triangle with sides 7, 9, and 11 in is 27 in.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A square photo with side 15 cm has area 225 square centimeters.
2. A board is 2 ft long, which equals 24 inches.
3. A quadrilateral has sides 6, 8, 10, and 12 m; perimeter is 36 m.
4. A square room has perimeter 32 ft, so each side is 8 ft.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. A square poster has side 50 cm. Convert this to meters and find the perimeter in meters.
50 cm equals 0.5 m; perimeter is 4 times 0.5, which is 2 meters.
2. An octagonal table has 8 equal sides of 18 inches. What is the perimeter in feet?
8 times 18 equals 144 inches; 144 divided by 12 equals 12 feet.
Perimeter, Area, and Surface Area
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
A square rug with side 10 ft has perimeter 100 ft.
Rewrite: A square rug with side 10 ft has perimeter 40 ft.
2) Fix the sentence:
A side of 3 m equals 30 cm.
Rewrite: A side of 3 m equals 300 cm.
3) Fix the sentence:
The perimeter of a triangle with sides 7, 9, and 11 in is 27 sq in.
Rewrite: The perimeter of a triangle with sides 7, 9, and 11 in is 27 in.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) A square photo with side 15 cm has area 225 square centimeters.
2) A board is 2 ft long, which equals 24 inches.
3) A quadrilateral has sides 6, 8, 10, and 12 m; perimeter is 36 m.
4) A square room has perimeter 32 ft, so each side is 8 ft.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) A square poster has side 50 cm. Convert this to meters and find the perimeter in meters.
50 cm equals 0.5 m; perimeter is 4 times 0.5, which is 2 meters.
2) An octagonal table has 8 equal sides of 18 inches. What is the perimeter in feet?
8 times 18 equals 144 inches; 144 divided by 12 equals 12 feet.
Ready to Practice?
Complete each section carefully.
9 Questions
15-20 minutes
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