Answer
Around 60 supermarkets in New Hampshire are in shopping centers.
Work Step by Step
There are 163 supermarkets in New Hampshire.
The denominator of $\dfrac{3}{8}$ is $8$.
The closes multiple of $8$ that has two non-zero digits is $160$.
Thus, the estimated number of supermarkets in New Hampshire that are in shopping centers is:
$=\dfrac{3}{8} \times 160
\\= 60$
