MATH PBL Middle School BUNDLE. This is a perfect back to school, first days of school, end of the year, math centers, summer camp, or summer school math bundle to practice fraction and mixed numbers operations, multi-digit addition, subtraction, division, and multiplication (including decimals), money management, area and perimeter calculation, algebraic expressions & equations, unit price calculation, finding percent of a number, markup calculation, comparing and rounding decimals, operatio