Chapter 1 - Whole Numbers - 1.10 Solving Application Problems - 1.10 Exercises - Page 95: 16

Estimate: 300,000; Exact: 258,420

We round to the nearest hundred-thousand to estimate, so 94,120 rounds up to 100,000 and 164,300 rounds up to 200,000. We add 100,000 + 200,000 = 300,000 to get the estimated number of Confederate deaths. To get the exact number, we add 94,120 + 164,300 = 258,420.