Students find perimeter and area for rectangles and squares and correct unit-labeling errors. Part A fixes three sentences including a square perimeter error and an area labeled in centimeters instead of square centimeters. Part B has four fill-in-the-blank problems about an 8 × 2 rectangle area and a rectangle perimeter. Part C has three true-or-false statements about a square area and what perimeter measures.
Correcting unit errors repeatedly helps students internalize when to use square units versus linear units.
Style:
Perimeter and Area
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
A square with 4 cm sides has a perimeter of 12 cm.
Rewrite: A square with 4 cm sides has a perimeter of 16 cm.
2. Fix the sentence:
A rectangle 5 cm by 3 cm has an area of 8 square cm.
Rewrite: A rectangle 5 cm by 3 cm has an area of 15 square cm.
3. Fix the sentence:
The area of a rectangle is 24 cm.
Rewrite: The area of a rectangle is 24 square cm.
Part B: Fill in the Blank
Write the missing word or number on each line.
1. A rectangle is 8 cm long and 2 cm wide. Its area is 16 square cm.
2. Area tells how many square units cover a flat surface.
3. A rectangle with sides 3 m and 6 m has a perimeter of 18 m.
4. A square with 5 cm sides has a perimeter of 20 cm.
Part C: True or False?
Read each statement. Circle True or False.
1. A square with 4 cm sides has an area of 16 square cm.
True False
2. Perimeter measures the space inside a shape.
True False
3. A rectangle with sides 9 cm and 1 cm has a perimeter of 20 cm.
True False
Perimeter and Area
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
A square with 4 cm sides has a perimeter of 12 cm.
Rewrite: A square with 4 cm sides has a perimeter of 16 cm.
2) Fix the sentence:
A rectangle 5 cm by 3 cm has an area of 8 square cm.
Rewrite: A rectangle 5 cm by 3 cm has an area of 15 square cm.
3) Fix the sentence:
The area of a rectangle is 24 cm.
Rewrite: The area of a rectangle is 24 square cm.
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) A rectangle is 8 cm long and 2 cm wide. Its area is 16 square cm.
2) Area tells how many square units cover a flat surface.
3) A rectangle with sides 3 m and 6 m has a perimeter of 18 m.
4) A square with 5 cm sides has a perimeter of 20 cm.
★ Part C: True or False?
Read each statement. Circle True or False.
1) A square with 4 cm sides has an area of 16 square cm.
True
False
2) Perimeter measures the space inside a shape.
True
False
3) A rectangle with sides 9 cm and 1 cm has a perimeter of 20 cm.
True
False
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10 Questions
15-20 minutes
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