Finding Missing Side Lengths
Grade 345 min
Learning Objective
I can use addition and subtraction to find the unknown side length of a polygon.
Lesson Flow
Watch Video
Finding Perimeter when a Side Length is Missing (Composite Figures) | Math with Mr. J
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Practice
7 questions • Short answer
Exit Ticket
“A shape has a top side of 6 cm. The bottom side has two parts. One part is 2 cm. What is the length of the other part of the bottom side if the entire bottom side is 6 cm? A shape has a left side of 8 inches. The right side has two parts. One part is 3 inches. What is the length of the other part of the right side if the entire right side is 8 inches? A shape has a side that is 10 meters long. This side is made up of two smaller parts. If one part is 4 meters long, how long is the other part?”
Teacher Guide
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