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Subtraction problem

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Transcript

  • 1. Can you remember the four steps?
  • 2. 1. Understand the problem 2. Plan how to solve the problem 3. Carry out the plan 4. Look Back
  • 3. On the 3rd of December 532 people went to see the new Harry Potter movie. Half way through the movie 67 people left because they didn’t like it. There were 213 kids in the audience. How many people saw the whole film?
  • 4. 1. Understand the problem On the 3rd of December 532 people went to see the new Harry Potter movie. Half way through the movie 67 people left because they didn’t like it. There were 213 kids in the audience. How many people saw the whole film? What information don’t we need? What is the question? What is the important information?
  • 5. 2. Plan how to solve the problem What strategy will we use? Solving an equation? Subtraction - 3. Carry out the plan
  • 6. 532 - 67 2-7 = can’t do 12-7 = 5 5 2 12 20-60 = can’t do 120-60 = 60 4 64 400-0 = 400 1
  • 7. 4. Look Back Is our Answer reasonable? YES Write your answer in a sentence. 465 people saw the whole Harry Potter Movie.