Round off the numbers and then estimate the value of each
Chapter 4, Problem 4.2.18(choose chapter or problem)
Round off the numbers and then estimate the value of each of the following expressions without using a calculator. Show your work, writing your answers in scientific notation. If available, use a calculator to verify your answers. a. (2,968,001,000) (189,000) b. (0.000 079) (31,140,284,788) c. 4,083,693 ? 49,312 213 ? 1945
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