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Practice finding the area of rectangles using square units on a grid.

Worksheet titled "Area of a Rectangle Practice" with eight rectangles on a grid, each labeled with a number and a blank line for the area in square units.

Worksheet titled "Area of a Rectangle Practice" with eight rectangles on a grid, each labeled with a number and a blank line for the area in square units.

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Show Answer Key & Explanations Step-by-step solution for: Area and Perimeter Worksheets - Third Grade Math Worksheets ...
To find the area of each rectangle, I need to count the number of square units (the small blue squares) inside each shape. I can do this by counting the rows and columns and multiplying them together.

Rectangle 1:
- Rows: 7
- Columns: 6
- Area = 7 × 6 = 42 square units

Rectangle 2:
- Rows: 3
- Columns: 8
- Area = 3 × 8 = 24 square units

Rectangle 3:
- Rows: 5
- Columns: 5
- Area = 5 × 5 = 25 square units

Rectangle 4:
- Rows: 5
- Columns: 5
- Area = 5 × 5 = 25 square units

Rectangle 5:
- Rows: 4
- Columns: 7
- Area = 4 × 7 = 28 square units

Rectangle 6:
- Rows: 7
- Columns: 2
- Area = 7 × 2 = 14 square units

Rectangle 7:
- Rows: 7
- Columns: 5
- Area = 7 × 5 = 35 square units

Rectangle 8:
- Rows: 7
- Columns: 7
- Area = 7 × 7 = 49 square units

Let me double-check my counts by looking at the grid lines carefully.

1. Rectangle 1: Looking at the grid, it appears to be 6 wide and 7 tall. 6 × 7 = 42. ✓
2. Rectangle 2: It appears to be 8 wide and 3 tall. 8 × 3 = 24. ✓
3. Rectangle 3: It appears to be 5 wide and 5 tall. 5 × 5 = 25. ✓
4. Rectangle 4: It appears to be 5 wide and 5 tall. 5 × 5 = 25. ✓
5. Rectangle 5: It appears to be 7 wide and 4 tall. 7 × 4 = 28. ✓
6. Rectangle 6: It appears to be 2 wide and 7 tall. 2 × 7 = 14. ✓
7. Rectangle 7: It appears to be 5 wide and 7 tall. 5 × 7 = 35. ✓
8. Rectangle 8: It appears to be 7 wide and 7 tall. 7 × 7 = 49. ✓

Final Answer:
1. 42 square units
2. 24 square units
3. 25 square units
4. 25 square units
5. 28 square units
6. 14 square units
7. 35 square units
8. 49 square units
Parent Tip: Review the logic above to help your child master the concept of area worksheet 3rd grade.
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