Calculating the Perimeter

Master calculating perimeter with fun 4th-grade math practice!

Challenge 1 Calculate the perimeter by adding the length of all sides together.Remember that in rectangles, opposite sides are the same length. 12 cm 18 cm 16 cm 16 cm Challenge 2-1 Draw a rectangle with a length of 10 cm and a width of 2 cm. The rectangle I drew for the question above has a perimeter of 24 cm. Challenge 2-2 Calculate the perimeters of rectangles that measure as the table below. Rectangle Length Rectangle Width Perimeter 10 cm 3 cm 26 cm 12 cm 5 cm 34 cm 6 cm 6 cm 24 cm 7 cm 10 cm 34 cm 15 cm 12 cm 54 cm 11 cm 13 cm 48 cm Challenge 3 A square has a perimeter of 32 cm. How long are it's sides?Remember that the sides of a square are all equally long!Show your working below. The sides of a square with perimeter 32 are 8 cm long. Challenge 3-2 Now we have a rectangle that has a perimeter of 32 cm. How could it's sides be?HINT: There are many answers to this.Show your working below.