Answer: 44 boxes, with 3 pencils left for doing math homework.
Step-by-step explanation:
(163 + 16) = 179 pencils are in Ms. DiSalvo's possession.
4 pencils/box:
(179 pencils)/(4 pencils/box) = 44.75 boxes. She can fill 44 boxes, with 3 pencils left over.