Unit 2, Section A
Concepts of Area Measurement
Grade 3
Practice
Problem 1
Pre-unit
- Partition the rectangle into 4 equal rows and 5 equal columns.
- How many small squares are there in the rectangle?
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Problem 2
Pre-unit
Is the number of dots in each image even or odd? Explain how you know.
Problem 3
Pre-unit
How many dots are in each array? Explain or show your reasoning.
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Problem 4
Pre-unit
Use the centimeter ruler to find the lengths of Rectangles A and B. Explain your reasoning.
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Problem 5
Which shape is the largest? Which shape is the smallest? Explain your reasoning. You may trace and cut out the shapes if it is helpful.
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Problem 6
Lin, Han, and Elena made letters from squares. Put the letters in order from least area to greatest area. Explain your reasoning.
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Problem 7
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Find the area of each rectangle drawn on the grid.
- Can rectangles with different shapes have the same area? Explain your reasoning.
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Problem 8
Find the area of the rectangle. Explain or show your reasoning.
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Problem 9
Exploration
Which shape has the greater area, the green triangle pattern block or the tan rhombus pattern block? Explain your reasoning
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Problem 10
Exploration
Here are 2 rectangles.
- What is the area of the larger rectangle?
- What is the area of 3 of the smaller rectangles combined?
- Can you completely cover the first rectangle with 3 of the smaller rectangles without cutting them up? Explain or show your reasoning.