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Partial Products Algorithm for Multiplication Created by Rina Iati South Western School District Hanover, PA

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Created By Rina Iati, South Western School District Calculate 50 X 60 67 X 53 Calculate 50 X 7 3,000 350 180 21 Calculate 3 X 60 Calculate 3 X 7 + Add the results 3,551 To find 67 x 53, think of 67 as 60 + 7 and 53 as 50 + 3. Then multiply each part of one sum by each part of the other, and add the results

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Created By Rina Iati, South Western School District Calculate 10 X 20 14 X 23 Calculate 20 X 4 200 80 30 12 Calculate 3 X 10 Calculate 3 X 4 + Add the results 322 Let’s try another one.

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Created By Rina Iati, South Western School District Calculate 30 X 70 38 X 79 Calculate 70 X 8 2, 100 560 270 72 Calculate 9 X 30 Calculate 9 X 8 + Add the results Do this one on your own. 3002 Let’s see if you’re right.

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Created By Rina Iati, South Western School District

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L.O. multiply and divide by 10/100 24 x 10 2442 420 240.

L.O. multiply and divide by 10/100 24 x 10 2442 420 240.

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