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Measuring Shape Perimeters

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Measuring Shape Perimeters

Measuring Shape Perimeters

Shapes with rulers for measuring perimeter

📏 Part 1: Understanding Perimeter

1. What is perimeter? Circle the best answer:

The distance around the outside of a shape

The inside area of a shape

The height of a shape

2. Draw an arrow around the perimeter of this rectangle:
3. Why is it important to use the same units when measuring all sides?

📐 Part 2: Measuring with Centimetres

4. Measure each side of this rectangle and write the lengths:

Top side: _______ cm

Bottom side: _______ cm

Left side: _______ cm

Right side: _______ cm

5. Now add all the sides together to find the perimeter:

Perimeter = _______ cm

6. Measure this square and calculate its perimeter:

Each side: _______ cm

Perimeter = _______ + _______ + _______ + _______ = _______ cm

🧮 Part 3: Using Non-Standard Units

7. If you measured a triangle using paper clips, which units would you use for all sides?

Paper clips for all sides

Paper clips for some sides, centimetres for others

Only centimetres

8. A rectangle has these measurements using blocks:

Top: 4 blocks, Bottom: 4 blocks, Left: 2 blocks, Right: 2 blocks

What is the perimeter? _______ blocks

9. Check all the things you could use to measure perimeter:

Ruler

Cubes

Paper clips

Your finger

Blocks

🎯 Part 4: Problem Solving

10. Sarah measured a triangle. The sides were 5cm, 3cm, and 4cm. What is the perimeter?

Answer: _______ cm

11. Draw your own rectangle and measure its perimeter:

Side measurements: _______ cm, _______ cm, _______ cm, _______ cm

Perimeter = _______ cm

12. Match the shape with its perimeter calculation:
1. Square with 3cm sides
2. Rectangle: 5cm and 2cm sides
3. Triangle: 4cm, 4cm, 6cm sides
A. 14cm perimeter
B. 12cm perimeter
C. 14cm perimeter
13. Explain in your own words how to find the perimeter of any shape:

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