Finding Unknown Side Lengths
Grade 3 · Math · 45 min
What's Included
Learning Objective
I can find a missing side length of a shape when I know the other side lengths.
Warm-Up Video
Unknown Channel · 5:00
3rd Grade Math 11.3, Algebra, Find Unknown Side Lengths
Practice Questions
7 questions · Short answer
Exit Ticket
Quick comprehension check
“A triangle has sides that measure 7 cm, 9 cm, and 5 cm. What is the perimeter of the triangle? A rectangle has sides that measure 12 inches, 6 inches, 12 inches, and 6 inches. What is the perimeter of the rectangle? A shape has sides that measure 8 feet, 8 feet, 8 feet, 8 feet, 8 feet, and 8 feet. What is the perimeter of the shape?”
Complete Lesson Package
Get all 3 ready-to-use resources:
Teacher Guide
Student Doc
Slides
