B68 — Mystery Numbers: Part/Whole and Equations

Notice that the unknowns in the next few problems in this section are in different places. The arrangement of the unknown in these problems serves to reinforce different big ideas and strategies on the multiplication and division landscape. It is important for students to encounter a variety of formats to realize patterns and relationships to achieve fluency. Present one problem at a time and represent students’ strategies on an open array. When multiplying use the first factor as the number of rows. When dividing, use the divisor as the number of rows. Place the question marks on the array as the unknowns.