Pitch perimeters

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Pitch perimeters

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

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