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Lesson 3-8 Example 1

3-8. Example 1. Lesson 3-8 Example 1. Estimate the difference of 4,521 and 1,786. Then find the actual difference. 1. What is the greatest place value of the numbers?. thousands. 3-8. Example 1. Lesson 3-8 Example 1.

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Lesson 3-8 Example 1

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  1. 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 1.What is the greatest place value of the numbers? thousands

  2. 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 2.Round the numbers to the nearest thousands. 5,000 and 2,000

  3. 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 3.Estimate the difference. 5,000 – 2,000 = 3,000

  4. 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 4.Write the numbers in vertical format. 4, 5 2 1− 1, 7 8 6

  5. 1 10 + 1 5 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 5.Subtract the ones by regrouping. Because 1 < 6, take 1 ten from the tens column. 10 + 1 = 11 and 11 – 6 = 5 4, 5 2 1− 1, 7 8 6

  6. 10 + 1 4 1 10 + 1 5 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 6.Subtract the tens by regrouping. Because 1 < 8, take 1 hundred from the hundreds column. 10 + 1 = 11 and 11 – 8 = 3 4, 5 2 1− 1, 7 8 6 3

  7. 10 + 1 10 + 4 4 1 10 + 1 3 7 5 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 7.Subtract the hundreds. Because 4 < 7, take 1 thousand from the thousands place. 10 + 4 = 14 and 14 – 7 = 7 4, 5 2 1− 1, 7 8 6 3

  8. 10 + 1 10 + 4 4 1 10 + 1 3 7 5 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 8.Subtract the thousands. 4, 5 2 1− 1, 7 8 6 2, 3

  9. 3-8 Example 1 Lesson 3-8 Example 1 Estimate the difference of 4,521 and 1,786. Then find the actual difference. 9.Compare you answer and estimate. 2,735 is close to 3,000, so it is reasonable.

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