3rd Grade Math Centers

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The perimeter of a regular octagon measures

32cm. What is the length of each side?

One side of a rectangular television screen

measures 40 inches. If the television screen

has a perimeter of 120 inches, what

are the lengths of the other sides?

Stephen has a rectangular bedroom with a

perimeter of 34 feet. The length of the

bedroom is 9 feet. What is the width

of Stephen’s bedroom?

The perimeter of a rectangular laptop

screen measures 100cm. The width of the

screen is 29cm. What is the length of the

screen?