Reviewing the Four Operations with Whole Numbers

Math with Mr. J

This video serves as a comprehensive review of the four basic arithmetic operations with whole numbers: addition, subtraction, multiplication, and division. The instructor, Mr. J, walks viewers through one example problem for each operation, demonstrating the standard algorithms step-by-step. The video focuses on procedural fluency, emphasizing critical mechanical details like aligning place values, regrouping (carrying and borrowing), using placeholders in multi-digit multiplication, and estimating quotients in long division. The content covers multi-digit addition with regrouping, subtraction across zeros and borrowing, 3-digit by 2-digit multiplication using partial products, and long division with a 2-digit divisor. The instructor uses a digital chalkboard format to write out the problems in real-time, allowing students to follow the handwriting and placement of numbers as he narrates the process. He explicitly addresses common pitfalls, such as misalignment of digits and forgetting placeholder zeros. For educators, this resource is an excellent refresher for students in upper elementary or middle school who have already learned these concepts but need to solidify their skills. It works well as a review station, a homework support tool, or a 'flipped classroom' resource before starting a unit that requires mastery of these prerequisites. The clear, isolated examples allow teachers to assign specific segments of the video depending on student needs.