Perimeters of squares and rectangles

[Pages:2]Perimeters of squares and rectangles

Find the perimeter of this rectangle.

To find the perimeter of a rectangle or a square, add the lengths of the four sides. 6 in. + 6 in. + 4 in. + 4 in. = 20 in. You can also do this with multiplication. (2 x 6) in. +(2 x 4) in. = 12 in. + 8 in. = 20 in.

6 in. 4 in.

20 in.

Find the perimeters of these rectangles and squares.

3 yd

4 in.

1 in.

3 yd

2 mi 3 mi

in.

3 cm 2 cm

yd

1 m 1 m

mi

4 ft 2 ft

4 in. 4 in.

4 cm 3 cm

2 km 2 km

? Dorling Kindersley Limited [2010]

5

4

4 8

7

1

5

0

6

4

3

7

Perimeters of squares and rectangles

3

Find the perimeter of this rectangle.

6 in.

9

To find the perimeter of a rectangle or a square, add the lengths of the

four sides.

6 in. + 6 in. + 4 in. + 4 in. = 20 in.

1

You can also do this with multiplication. (2 x 6) in. +(2 x 4) in.

= 12 in. + 8 in. = 20 in.

20 in.

5 Find the perimeters of these rectangles and squares.

2

4 in.

1 in.

3 yd 3 yd

6

4 in.

2 mi 3 mi

10 in.

12 yd

10 mi

3 cm

3

2 cm

8 10 cm

0 4 in.

1 m 1 m

4m

4 cm

4 ft 2 ft

12 ft

2 km

4 in.

2 km 3 cm

3

16 in.

14 cm

8 km

2

6

9

8 1 1 6 Make sure that children do not simply add the len8gths of two sides of a figure rather than all four sides. Help children realize that the perimeter of a square can be found by multiplying the length of one side by 4.

? Dorling Kindersley Limited [2010]

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download