Writing Numerical Expressions from Words

Math with Mr. J

This concise and clear instructional video teaches students how to translate verbal phrases into numerical expressions, a foundational skill for algebra and problem-solving. "Math with Mr. J" guides viewers through eight distinct examples, demonstrating how to identify key mathematical vocabulary—such as "sum," "decreased by," "product," and "quotient"—and convert them into appropriate mathematical operations using numbers and symbols. The video systematically explores all four basic operations: addition, subtraction, multiplication, and division. It pays special attention to common stumbling blocks, such as the specific ordering required for phrases like "less than," and introduces students to various notational forms for multiplication (parentheses, dots, asterisks) and division (fraction bars). This variety helps build mathematical fluency and prepares students for higher-level math where notation changes. For educators, this resource serves as an excellent direct instruction tool or review for 5th and 6th graders transitioning from arithmetic to algebraic thinking. It directly addresses the Common Core standards regarding writing and interpreting numerical expressions. The clear visual format and step-by-step narration make it ideal for introducing the concept of "math as a language" and helping students decode word problems.