Let's solve the problem step by step.
Problem:
We are given a worksheet titled
"Areas of rectangles using a grid" for Grade 3 Geometry.
Each small square in the grid represents
1 square unit.
We need to find the
area of each rectangle shown in the grid.
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How to Find Area Using a Grid:
The area of a rectangle is calculated by:
>
Area = Length × Width
Since each square is 1 square unit, we can count the number of squares in the rectangle or multiply the number of squares along the length and width.
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Now let’s go through each rectangle:
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####
1. Top-left rectangle:
- It has
2 columns and
2 rows.
- So, it's a 2×2 rectangle.
- Area = 2 × 2 =
4 square units
✔ Answer: 4
---
####
2. Top-right rectangle:
- It has
3 columns and
1 row.
- So, it's a 3×1 rectangle.
- Area = 3 × 1 =
3 square units
✔ Answer: 3
---
####
3. Middle-left rectangle:
- It has
3 columns and
4 rows.
- So, it's a 3×4 rectangle.
- Area = 3 × 4 =
12 square units
✔ Answer: 12
---
####
4. Middle-right rectangle:
- It has
5 columns and
3 rows.
- So, it's a 5×3 rectangle.
- Area = 5 × 3 =
15 square units
✔ Answer: 15
---
####
5. Bottom-left rectangle:
- It has
6 columns and
4 rows.
- So, it's a 6×4 rectangle.
- Area = 6 × 4 =
24 square units
✔ Answer: 24
---
####
6. Bottom-right rectangle:
- It has
8 columns and
5 rows.
- So, it's an 8×5 rectangle.
- Area = 8 × 5 =
40 square units
✔ Answer: 40
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✔ Final Answers (from top to bottom, left to right):
1.
4
2.
3
3.
12
4.
15
5.
24
6.
40
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📌 Summary:
To find the area of a rectangle on a grid:
- Count how many squares are along the length and width.
- Multiply them:
Length × Width = Area.
- Each square = 1 square unit.
This method helps students visualize area and understand multiplication in real-world contexts.
Let me know if you'd like this as a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of finding area worksheets.
