Sept 10, 3rd Grade Comparison Method

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MODEL METHODS 1. Part – Whole 2. Comparison

The Comparison Model:

The Comparison Model There are 2 more pears than oranges. If there are 6 pears, how many oranges are there?

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MODEL Smaller Quantity Difference CONCEPT Larger Quantity – Smaller Quantity = Difference Smaller Quantity + Difference = Larger Quantity Larger Quantity – Difference = Smaller Quantity Larger Quantity + Smaller Quantity = Sum Smaller Quantity SUM Comparison Model Larger Quantity

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Example: Draw the comparison model of the following: 1. The difference of 7 and 8. 8 7 ?

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Example: Draw the comparison model of the following: 2. The difference of 10 and 5. 10 5 ?

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Draw the comparison model of the following: Example: 3. The sum of 2 and 4 . 4 2 ?

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Example: Draw the comparison model of the following: 4 . The sum and difference of 7 and 8. 8 7 ? ?

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Faith saved $ 225 and Luke saved $ 100. How much less than Faith did Luke saved? 225- 100 = P125 Examples: Faith Luke ? 2. Madison ran for 4 hours while Hank did for 6 hours. How many hours did they run altogether? 6 + 4 = 10 hours Hank Madison ? 4 6 225 100

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