Grade 4 students practice solving two-step word problems involving multiplicative comparison in this Eureka Math lesson from Chapter 12. Using the Read-Draw-Write approach, students work through real-world scenarios requiring them to find a product and then apply that result in a second calculation, such as multiplying a unit cost before scaling up or using a multiplicative comparison before adding or subtracting. The lesson builds on prior multi-digit multiplication skills to help students set up and solve multi-step problems with tape diagrams and equations.
Section 1
Model and Solve Two-Step Multiplicative Comparison Problems
To solve a two-step word problem involving multiplicative comparison, first draw and label a tape diagram to model the relationship between the quantities. Then, write an equation with a variable for the unknown value and solve it. The structure often involves finding a larger quantity through multiplication and then performing a second step of addition or subtraction: .
Section 2
Create a Word Problem from a Tape Diagram
To create a word problem from a tape diagram, translate the visual components into a story. Identify the known quantity (the value of one unit), the relationship between quantities (how many times larger one bar is than another), and the unknown value (the question mark). Use multiplicative comparison language like 'times as many' to describe the relationship and form a question based on the unknown.
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Section 1
Model and Solve Two-Step Multiplicative Comparison Problems
To solve a two-step word problem involving multiplicative comparison, first draw and label a tape diagram to model the relationship between the quantities. Then, write an equation with a variable for the unknown value and solve it. The structure often involves finding a larger quantity through multiplication and then performing a second step of addition or subtraction: .
Section 2
Create a Word Problem from a Tape Diagram
To create a word problem from a tape diagram, translate the visual components into a story. Identify the known quantity (the value of one unit), the relationship between quantities (how many times larger one bar is than another), and the unknown value (the question mark). Use multiplicative comparison language like 'times as many' to describe the relationship and form a question based on the unknown.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter