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Multiplying Whole Numbers

Multiplying Whole Numbers. Lesson 2-2. Example: 563 x 37. 1. 4. 2. 563. x. 37. 1. 1. 39. 4. 1. 1. +. 16. 8. 9. 0. 2. 0. 8. 3. 1. Example: 53 x 2618. 2618 has more digits (4) than 53 (3), so it goes on top. 3. 4. 1. 2. 2618. x. 53. 1. 7. 8. 5. 4. 13.

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Multiplying Whole Numbers

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  1. Multiplying Whole Numbers Lesson 2-2

  2. Example: 563 x 37 1 4 2 563 x 37 1 1 39 4 1 1 + 16 8 9 0 2 0 8 3 1

  3. Example: 53 x 2618 2618 has more digits (4) than 53 (3), so it goes on top. 3 4 1 2 2618 x 53 1 7 8 5 4 13 0 9 0 0 + 1 3 8 7 5 4

  4. Lattice Multiplication Step-by-Step

  5. 356 x 25 = I don’t remember how to multiply!!!

  6. I can help!! Let me show you how to do Lattice Multiplication. HELP!!!

  7. 356 x 25 Make a grid the exact size of your problem. A 2 digit number times a 3 digit number gets a 2 x 3 grid. Draw a diagonal line in each box. 5 3 6 2 5

  8. 356 x 25 Multiply 6 * 2 and place the answer in the grid where the lines meet. 5 3 6 1 2 2 5

  9. 356 x 25 Multiply 5 * 2 and place the answer in the grid where the lines meet. 5 3 6 1 1 2 0 2 5

  10. 356 x 25 Multiply 3 * 2 and place the answer in the grid where the lines meet. Use a zero as a place holder. 5 3 6 0 1 1 2 0 6 2 5

  11. 356 x 25 Multiply 6 * 5 and place the answer in the grid where the lines meet. 5 3 6 0 1 1 2 0 6 2 3 5 0

  12. 356 x 25 Multiply 5 * 5 and place the answer in the grid where the lines meet. 5 3 6 0 1 1 2 0 6 2 2 3 5 5 0

  13. 356 x 25 Multiply 3 * 5 and place the answer in the grid where the lines meet. 5 3 6 0 1 1 2 0 6 2 1 2 3 5 5 5 0

  14. 356 x 25 Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer. 5 3 6 0 1 1 2 0 6 2 1 2 3 5 5 5 0 0

  15. 356 x 25 Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer. 5 3 6 0 1 1 +1 2 0 6 2 1 2 3 5 5 5 0 0 0

  16. 356 x 25 Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer. 5 3 6 0 1 1 +1 2 0 6 2 1 2 3 5 5 5 0 9 0 0

  17. 356 x 25 Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer. 5 3 6 0 1 1 +1 2 0 6 2 1 2 3 5 8 5 5 0 9 0 0

  18. 356 x 25 Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer. 5 3 6 0 1 1 +1 2 0 6 2 1 2 3 5 8 5 5 0 9 0 0

  19. 356 x 25 = 8,900

  20. Which method do you prefer?

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