Lesson Plans and Worksheets for Grade 3
Lesson Plans and Worksheets for all Grades
Common Core For Grade 3
More Lessons for Grade 3 Math
Examples, solutions, and videos to help Grade 3 students learn how to apply the distributive property as a strategy to find the total area of a large rectangle by adding two products.
Common Core Standards: 3.MD.5,
New York State Common Core Math Grade 3, Module 4, Lesson 10
Worksheets for Grade 3, Module 4, Lesson 10
Sonya folds a 6 by 6 square inch piece of paper into 4 equal parts, shown below. What is the area of 1 of the parts?
Note: This problem reviews the concept of finding area.
We can break apart a 18 by 9 rectangle into two 9 by 9 rectangles. What other ways could we break apart this rectangle?
We could break it into one 10 by 9 rectangle and one 8 by 9 rectangle.
Lesson 10 Homework
1. Label the side lengths of the shaded and unshaded rectangles. Then find the total area of the large
rectangle by adding the areas of the 2 smaller rectangles.
2. Finn imagines 1 more row of nine to find the total area of 9 × 9 rectangle. Explain how this could help him
solve 9 × 9.
3. Shade to break the 16 × 4 rectangle into 2 smaller rectangles. Then find the sum of the areas of the 2
smaller rectangles to find the total area. Explain your thinking.
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