John bought several boxes of books at a yard sale and ended up with 21 books total. If each box had 7 books, how many boxes did he buy?

There are 40 people attending a luncheon. If a table can hold 5 people, how many tables do they need?

45 ÷ 9 = _______

There are 56 students in the school band. If the band instructor put these students into rows with 8 students in each row, how many rows could he make?