Videos, examples, and solutions to help Grade 3 students learn how to use all four operations to solve problems involving perimeter and missing measurements.
Common Core Standards: 3.G.1
Plans and Worksheets for Grade 3
Plans and Worksheets for all Grades
Lessons for Grade 3
Common Core For Grade 3
New York State Common Core Math Grade 3, Module 7, Lesson 17
Download the Worksheets for Grade 3, Module 7, lesson 17 (pdf)
Example: Gil places two regular hexagons side by side as shown to make a new shape. Each side measures 6
centimeters. Find the perimeter of his new shape.
Find the perimeter of shapes with missing measurements.
1. The shapes below are made up of rectangles. Label the missing side lengths. Then write and solve an
equation to find the perimeter of each shape.
2. Sari draws and labels the square and rectangle below. Find the perimeter of the new shape.
3. Label the missing side lengths. Then find the perimeter of the shaded rectangle.
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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