How much will laura bring home if she makes $745 a week if 7.65 percent is withheld for fica and 12 percent is withheld for federal and state tax? $655.60 $688.01 $598.61 $745.00

Arrays are useful models for multiplication which can be used in a variety of ways, ranging from highly structured lessons to games and open investigations. An array is formed by arranging a set of objects into rows and columns. Each column must contain the same number of objects as the other columns, and each row must have the same number as the other rows.

The following array, consisting of four columns and three rows, could be used to represent the number sentence 3 x 4 = 12.