Finding a Missing Side Using Perimeter

Grade 445 min

Learning Objective

I can use addition and subtraction to figure out the missing side of a shape when I know its perimeter.

Lesson Flow

Watch Video

5 min

Find the Missing Side of a Rectangle, when you know the Perimeter

Unknown Channel

Practice

14 min

2 questions β€’ Short answer

Exit Ticket

5 min

β€œA rectangle has a perimeter of 30 cm. One of the lengths is 8 cm. What is the width of the rectangle? A rectangle has a perimeter of 26 meters. One of the widths is 4 meters. What is the length of the rectangle? ”

Teacher Guide

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  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts

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