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Adding and Subtracting Large Numbers. By Scott Mangum

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Mississippi benchmark 5a – Adding and subtracting nine- digit whole numbers with and without regrouping.

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Vocabulary Addends – Are numbers being added. Sum – Is the answer to an addition problem. Minuend – Is the number being subtracted from. (top number) Subtrahend – Is the number being subtracted. (bottom number) Difference – Is the answer to an subtraction problem. Regrouping – Is when you borrow a number from a higher place value or carry a number to a higher place value.

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Subtraction with regrouping 721 - 158 / 1 / 11 3 / 6 65 Regrouping/Borrowing

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Addition with regrouping 739 + 274 311110 Regrouping/Carrying

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Practice The population of Jackson, MS is 2,844,658. The population of Birmingham, AL is 4,447,100. How many more people live in Birmingham than Jackson? - 2,844,658 1,602,442 4,447,100

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Practice The American Red Cross receives donations for different disasters. The Red Cross received $289,000,000 for the September 11 th attack, $173,000,000 for the Indian Ocean Tsunami, and $537,000,000 for the relief efforts for Hurricane Katrina. What is the difference between the tsunami and Katrina? How much money did the Red Cross collect in all? $537,000,000 -$173,000,000 $364,000,000 $537,000,000 $289,000,000 +$173,000,000 $999,000,000

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Practice There were 2,725,716 houses built in 2002. In 2003 consumers built 3,010,738 more homes. How many houses were built in 2002 and 2003? How many more houses were built in 2003 than 2002? 3,010,738 +2,725,716 5,736,454 3,010,738 -2,725,716 285,022

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