"Perimeter of Rectangle and Square" PPT courseware on rectangle and square

Description

"Perimeter of Rectangle and Square" PPT courseware on rectangle and square

Do the math:

A rectangular swimming pool is 20 meters long and 10 meters wide. What is its perimeter in meters?

(20+10)×2＝60 (meters)

Answer: Its circumference is 60 meters.

A square handkerchief has a side length of 20 cm. What is its circumference in cm?

20×4=80(cm)

Answer: Its circumference is 80 centimeters.

Choose the correct formula and explain why.

1. The perimeter of the square is 36 centimeters. What is the length of its side in centimeters?

2. The side length of the square is 36 centimeters. What is its perimeter in centimeters?

(1) 36×4=144(cm)

(2) 36÷4=9(cm)

Class summary:

How to calculate the perimeter of a rectangle:

Method 1: Perimeter = length + width + length + width

Method 2: Perimeter = length × 2 + width × 2

Method 2: Perimeter = (length + width) × 2

How to calculate the perimeter of a square:

Method 1: Perimeter = side length + side length + side length + side length

Method 2: Perimeter = side length × 4

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For more information about the PPT courseware "Rectangle and Square Perimeter of Rectangle and Square", please click the Rectangle and Square ppt Rectangle and Square Perimeter ppt tag.

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Update Time: 2024-10-02

This template belongs to Mathematics courseware Jiangsu Education Edition Third Grade Mathematics Volume 1 industry PPT template

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