3rd Grade Math Centers

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A rectangular notebook has a perimeter

of 66 centimeters. One side of the notebook

measures 18cm. What do the other sides

measure?

The width of a square is 12cm. Ben

measured the perimeter of the square and

said it was 24cm. Is Ben correct? Explain.

Jack is putting a fence around a square

garden. Each side of the garden is 4 meters

long. If the fencing costs five dollars for each

meter, how much will Ben need to spend?

A rectangular vegetable garden has a

perimeter of 30 meters. If one side measures

9 meters, what do the other sides measure?