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3rd grade

Course: 3rd grade > Unit 11

Lesson 2: Perimeter of polygons with missing side lengths
Math
3rd grade
Perimeter
Perimeter of polygons with missing side lengths
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Find perimeter when a side length is missing

CCSS.Math: 3.MD.D.8
Google Classroom

Problem

The figure below is made of rectangles.
Label the missing side length.
Click each dot on the image to select an answer.
What is the perimeter of the figure?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
start text, m, end text
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