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Lesson 4-13 Example 2

2-5. Example 2. Lesson 4-13 Example 2. Find the product of 87 and 39. Use the traditional multiplication method. 1. Estimate. 90 × 40 = 3,600. 2-5. Example 2. Lesson 4-13 Example 2. Find the product of 87 and 39. Use the traditional multiplication method.

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Lesson 4-13 Example 2

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  1. 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 1. Estimate. 90 × 40 = 3,600

  2. 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 2.Rewrite the problem in vertical format. 87× 39

  3. 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 3.Multiply 9 times the digit in the ones column. 9 × 7 = 63 Write the tens digit above the tens column and the ones digit in the product under the ones column. 6 3 87× 39

  4. 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 4.Multiply 9 times the tens column. 9 × 8 = 72 Add the 6 tens to get 78. 6 3 87× 39 78

  5. 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 5. Multiply the value of the digit in the tens place times 7. 30 × 7 = 210 Write the hundreds digit above the hundreds column and the tens digit in the product under the tens column. 2 3 87× 39 78 10

  6. 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 6. Multiply the value in the tens column by 30. 30 × 8 = 240 Add 2 tens to get 260. Write the 26 in the hundreds place. 2 3 87× 39 78 10 2,6

  7. ______ 3,393 + 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 7. Find the sum of the two products. 2 3 87× 39 78 2,610

  8. 2-5 Example 2 Lesson 4-13 Example 2 Find the product of 87 and 39. Use the traditional multiplication method. 8. The product is 3,393. Compare to your estimate for reasonableness.

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