Answer
Estimate: 2,800; Exact: 2,828
Work Step by Step
863 rounds to 900, 735 rounds to 700, 438 rounds to 400, 792 rounds to 800. For the estimate, we add 900 + 700 + 400 + 800 = 2800. For the exact sum, we add 863 + 735 + 438 + 792 = 2828
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.