What is the perimeter?
3rd Grade Perimeter

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Mathematics
•
3rd Grade
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1.
FLASHCARD QUESTION
Front
Back
The perimeter is the total distance around the outside of a shape.
2.
FLASHCARD QUESTION
Front
What is the formula to calculate the perimeter of a rectangle?
Back
The perimeter of a rectangle is calculated by adding the lengths of all four sides or using the formula: P = 2(length + width).
3.
FLASHCARD QUESTION
Front
If a square has a side length of 5 cm, what is its perimeter?
Back
The perimeter of a square is calculated by P = 4 × side length. So, P = 4 × 5 cm = 20 cm.
4.
FLASHCARD QUESTION
Front
What is the perimeter of a rectangle that is 10 cm long and 5 cm wide?
Back
P = 2(length + width) = 2(10 cm + 5 cm) = 30 cm.
5.
FLASHCARD QUESTION
Front
What is the perimeter of a square with a side length of 6 feet?
Back
P = 4 × side length = 4 × 6 feet = 24 feet.
6.
FLASHCARD QUESTION
Front
If the perimeter of a shape is 40 cm, what could be the lengths of the sides?
Back
Possible lengths could be 10 cm, 10 cm, 10 cm, and 10 cm for a square, or other combinations that add up to 40 cm.
7.
FLASHCARD QUESTION
Front
What is the perimeter of a triangle with sides measuring 3 cm, 4 cm, and 5 cm?
Back
P = 3 cm + 4 cm + 5 cm = 12 cm.
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