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Multiplying Whole Numbers

Multiplying Whole Numbers . SWBAT multiply with zeros in one or more whole-number factors. Long way. 237 x 620 000 Same as: (237 x 0) 7440 Same as: (237 x 20) +223200 Same as: (237 x 600) 230,640. The quick way.

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Multiplying Whole Numbers

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  1. Multiplying Whole Numbers SWBAT multiply with zeros in one or more whole-number factors

  2. Long way 237 x 620 000 Same as: (237 x 0) 7440 Same as: (237 x 20) +223200 Same as: (237 x 600) 230,640

  3. The quick way • Multiply the digit in the ________ spot by each of the digits in the top number. • Multiply the digit in the ________ spot by each of the digits in the top number. • Multiply the digit in the ________ spot by each of the digits in the top number. • If there is a __________ at the end of the number, skip step 1 and pull the _________ down to the ______ of your answer. ones tens hundreds zero zero end

  4. Examples • 237 x 380 • 593 x 506 • 817 x 609 • 385 x 806 • 2365 x 580 • 6549 x 302

  5. The Distributive Property • How else can I write the number 902? • 900 + 2 • The distributive property tells us that we can multiply each number by the second, and then add them together • a(b+c) = ab + ac

  6. The Distributive Property • 902 x 41,736 • (900 + 2) x 41,736. • 506 x 831 • 780 x 311 • 470 x 1211

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