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Modeling & Partial Solution

23 + 18 = (20+10) + (3+8) = 30 +11= 41. 26 + 47 = (20+40) + (6+7) = ? + ? = ?. Modeling & Partial Solution. More Difficult Partial Solution. 125 + 299 = (100 + 200) + ? + ? = ? + ? + ? = ?. Throw in the Thousands Place. 1128 + 1437 = (1000 + 1000) + ? + ? + ? = ? + ? + ? + ? = ?.

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Modeling & Partial Solution

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  1. 23 + 18 = (20+10) + (3+8) = 30 +11= 41 26 + 47 = (20+40) + (6+7) = ? + ? = ? Modeling & Partial Solution

  2. More Difficult Partial Solution • 125 + 299 = • (100 + 200) + ? + ? = • ? + ? + ? = • ?

  3. Throw in the Thousands Place • 1128 + 1437 = • (1000 + 1000) + ? + ? + ? = • ? + ? + ? + ? = • ?

  4. 17 + 25 = ? + ? = 114 + 129 = ? + ? + ? = Complicate the Situation

  5. 39 + 28 = 1529 + 1387 = Take Away the Symbols

  6. Now You’re on Your Own!!! Solve Using Easy Addition: 12, 247 + 24, 628

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