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Estimating and Finding the Exact Sum of 2,564 and 4,877

In this lesson, we will learn how to estimate the sum of two numbers, 2,564 and 4,877, and then compare it with the actual sum. First, we identify the greatest place value in these numbers, which is the thousands place. Next, we will round both numbers to the nearest thousand, yielding an estimated sum of 8,000. Finally, we will calculate the actual sum to be 7,441, and discuss how close it is to our estimate, concluding that the answer is reasonable.

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Estimating and Finding the Exact Sum of 2,564 and 4,877

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  1. 3-4 Example 2 Lesson 3-4 Example 2 Estimate the sum of 2,564 and 4,877. Then find the actual sum. 1.What is the greatest place value of the numbers? thousands

  2. 3-4 Example 2 Lesson 3-4 Example 2 Estimate the sum of 2,564 and 4,877. Then find the actual sum. 2.Round the addends to the thousands place. 3,000 + 5,000 Estimate the sum. 3,000 + 5,000 = 8,000

  3. 1 1 1 2,564 + 4,877 7,441 3-4 Example 2 Lesson 3-4 Example 2 Estimate the sum of 2,564 and 4,877. Then find the actual sum. 3.Find the actual sum.

  4. 3-4 Example 2 Lesson 3-4 Example 2 Estimate the sum of 2,564 and 4,877. Then find the actual sum. 4.Compare the actual sum with the estimate. 7,441is close to the estimate of8,000.The answer is reasonable.

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