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Pitch perimeters
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Transcript

  • 1. Pitch Perimeters
    • WALT : calculate the perimeter of rectangles
  • 2. What do we mean by the perimeter of a shape?
    • The total length of all the sides
    • 10cm
    • 5cm
    Answer = 30cm
  • 3. What strategies did you use to find your answer?
    • Add all the sides together
    • Double the length, double the width and add them together
    • Add the length and width and double it
  • 4. Now try this one…
    • 25cm
    • 10cm
  • 5. And this one…
    • 50m
    • 25m
  • 6. How do we find the missing lengths?
    • 10cm
    • 10cm
    • 5cm
    • 20cm
  • 7. Perimeters worksheet
    • In your maths book, draw each shape accurately (using a ruler). Then work out the perimeter and record it underneath the shape.
  • 8. Common errors…