Chapter 1 - Whole Numbers - 1.7 Rounding Whole Numbers - 1.7 Exercises - Page 74: 54

estimated: 10,670 exact:10,533

Estimate: Exact: 3000  2685 (All digits changed to 0, except first digit which is rounded) 70  73 (All digits changed to 0, except first digit which is rounded) 600  592 (All digits changed to 0, except first digit which is rounded) +7000  7183 (All digits changed to 0, except first digit which is rounded) 10670 (Estimated Answer) Exact: 2685 + 73 + 592+7183 = 10,533