Mastering Perimeter of Rectangles and Squares

Practical activities to work out the perimeter of rectangles and squares using given side lengths. Learn how to calculate perimeters efficiently and identify the longest side of a rectangle based on its perimeter.

• Perimeter
• Rectangle
• Square
• Length
• Activity

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Uploaded on Jul 23, 2024 | 0 Views

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Presentation Transcript

1. Perimeter of a Rectangle Activity 1 Work out the perimeter of the rectangles. 9 cm 4 cm 4 cm 9 cm ___cm + ___ cm + ____cm + ___ cm = ___ cm What do you need to know to work out the perimeter? 1 4 Length & Perimeter masterthecurriculum.co.uk

2. Perimeter of a Rectangle Activity 1 Work out the perimeter of the rectangles. 6 cm 15 cm ___cm + ___ cm + ____cm + ___ cm = ___ cm What do you need to know to work out the perimeter? 2 4 Length & Perimeter masterthecurriculum.co.uk

3. Perimeter of a Rectangle Activity 1 Work out the perimeter of the rectangles. 5 cm 52 cm 2 cm 12 cm ___cm + ___ cm + ___cm + ___ cm = ___ cm What do you need to know to work out the perimeter? 3 4 Length & Perimeter masterthecurriculum.co.uk

4. Perimeter of a Rectangle Activity 1 Work out the perimeter of the rectangles. 4 cm 2 cm 10 cm 60 mm ___cm + ___ cm + ___cm + ___ cm = ___ cm What do you need to know to work out the perimeter? 4 4 Length & Perimeter masterthecurriculum.co.uk

5. Perimeter of a Rectangle Activity 1 Work out the perimeter of the rectangles. 6 cm 230 cm 14 cm 1.5 m 23 cm 15 cm 5 4 Length & Perimeter masterthecurriculum.co.uk

6. Perimeter of a Rectangle Activity 2 Work out the perimeter of the square. 8 cm What way is more efficient for calculating the perimeter? 6 4 Length & Perimeter masterthecurriculum.co.uk

7. Perimeter of a Rectangle Activity 2 Work out the perimeter of the square. 2 cm 5 cm 7 4 Length & Perimeter masterthecurriculum.co.uk

8. Perimeter of a Rectangle Activity 3 The perimeter of the rectangle is 36 cm. What is the length of the longest side? 6 cm How do you know the value of each side? 8 4 Length & Perimeter masterthecurriculum.co.uk

9. Perimeter of a Rectangle Activity 3 The perimeter of the rectangle is 26 cm. What is the length of the shortest side? 10 cm 9 4 Length & Perimeter masterthecurriculum.co.uk

10. Perimeter of a Rectangle Reasoning - 2 The perimeter of a square is 20cm. How long is each side? 10 4 Length & Perimeter masterthecurriculum.co.uk

11. Perimeter of a Rectangle Reasoning - 2 The perimeter of a square is 20cm. How long is each side? 5 cm 5 cm 5 cm 5 cm 11 4 Length & Perimeter masterthecurriculum.co.uk

12. Perimeter of a Rectangle Reasoning - 3 Always, Sometimes, Never? When all the sides of a rectangle are odd numbers, the perimeter is even. Prove it. 12 4 Length & Perimeter masterthecurriculum.co.uk

13. Perimeter of a Rectangle Reasoning - 3 Always, Sometimes, Never? When all the sides of a rectangle are odd numbers, the perimeter is even. Prove it. Always because when adding an odd and an odd they always equal an even number. 13 4 Length & Perimeter masterthecurriculum.co.uk

14. Perimeter of a Rectangle Reasoning - 4 Here is a square. Each of the sides is a whole number of metres. Which of these lengths could be the perimeter of the shape? 16cm, 39cm, 24cm, 55cm, 44cm, 70cm, 64 cm Why could the other values not be the perimeter? 14 4 Length & Perimeter masterthecurriculum.co.uk

15. Perimeter of a Rectangle Reasoning - 4 Here is a square. Each of the sides is a whole number of metres. 16 cm Sides = 4 cm 24 cm Sides = 6 cm 44 cm Sides = 11 cm 64 cm Sides = 16 cm The rest are not divisible by 4. 15 4 Length & Perimeter masterthecurriculum.co.uk

16. Perimeter of a Rectangle Discussion What do you need to know to work out the perimeter? How do you know the value of each side? What is this shape? (square) If you only have the length of one side, how can you calculate the perimeter? What way is more efficient for calculating the perimeter? 16 4 Length & Perimeter masterthecurriculum.co.uk