Instructions
Today we will learn about Perimeter and Area!
- Perimeter is the distance all the way AROUND a shape. Imagine you're a tiny bug walking along the edges. The total distance you walk is the perimeter. We find it by adding all the side lengths together.
- Area is the space INSIDE a shape. To find the area, we will count how many little squares it takes to fill up the shape.
Part 1: Find the Perimeter
Add the length of all the sides to find the perimeter of each shape.
1.
5 cm
3 cm
Perimeter = ___ + ___ + ___ + ___ = _____ cm
2.
4 cm
4 cm
Perimeter = ___ + ___ + ___ + ___ = _____ cm
3.
8 cm
2 cm
Perimeter = ___ + ___ + ___ + ___ = _____ cm
Part 2: Find the Area
Count the blue squares to find the area of each shape.
4.
Area = _____ square units
5.
Area = _____ square units
6. A rectangle has a length of 5 squares and a width of 3 squares. What is its area?
Area = _____ square units
Part 3: Perimeter and Area Challenge
Look at the shape below. Find both the perimeter and the area.
7. The length of each square's side is 1 unit.
Perimeter = _____ units
Area = _____ square units
Answer Key
Part 1: Find the Perimeter
- Perimeter = 5 + 3 + 5 + 3 = 16 cm
- Perimeter = 4 + 4 + 4 + 4 = 16 cm
- Perimeter = 8 + 2 + 8 + 2 = 20 cm
Part 2: Find the Area
- Area = 8 square units
- Area = 9 square units
- Area = 15 square units (5 x 3 = 15)
Part 3: Perimeter and Area Challenge
- The shape is 5 units long and 3 units wide.
Perimeter = 5 + 3 + 5 + 3 = 16 units
Area = 15 square units (There are 15 blue squares)