Solving Two-Step Word Problems: Multiplication and Subtraction

MatholiaChannel

This educational video provides a clear, step-by-step demonstration of how to solve a two-step mathematical word problem involving multiplication and subtraction. Through the scenario of a fruit seller named Kevin, the video guides viewers on how to first calculate the total inventory using multiplication (4 crates x 836 apples) and then determine the remaining stock after sales using subtraction. The visual walkthrough specifically highlights the vertical column method for both operations, including regrouping (carrying and borrowing). The video emphasizes the importance of breaking complex problems into manageable parts. It introduces the "bar model" method—a staple of Singapore Math—to visually represent the quantities involved, helping students understand the relationship between the number of crates, items per crate, total items, items sold, and items remaining. This visual approach supports conceptual understanding before moving to abstract calculation. Ideally suited for upper elementary classrooms, this resource helps teachers demonstrate the application of arithmetic skills in real-world contexts. It is particularly useful for lessons on multi-step problem solving, interpreting word problems, and practicing standard algorithms for operations with multi-digit numbers. The clear narration and uncluttered visuals make it an excellent tool for introducing or reviewing these essential math strategies.