4.OA.2 | Multiplicative Comparison Word Problems | Grade 4 Math

Grade 4 math lesson for standard 4.OA.2: Multiply or divide to solve word problems involving multiplicative comparison, using drawings and equations with a symbol for the unknown number. In this lesson, students use a marker story to decide when to multiply and when to divide in “times as many” word problems. Students represent unknowns with letters and connect drawings to equations such as m = 4 x 6 and 24 ÷ 4 = s. Standard source: California Common Core State Standards for Mathematics, Grade 4 Operations and Algebraic Thinking.