Question

Round each number. Then estimate each sum or difference.
-57+(-98)=
-191+(-571)=

Answer 1

To estimate the sums or differences, round each number and then perform the operations. For -57+(-98), the rounded numbers are -60 and -100, resulting in an estimated sum of -160. For -191+(-571), the rounded numbers are -200 and -600, resulting in an estimated sum of -800.

Step-by-step explanation:

To estimate the sums or differences, we need to round each number first. For the first problem, -57+(-98), we round -57 to -60 and -98 to -100. Adding these rounded numbers gives us -160. For the second problem, -191+(-571), we round -191 to -200 and -571 to -600. Adding these rounded numbers gives us -800. Therefore, the estimated sums or differences are -160 and -800, respectively.